Colt government serial numbers

John. I kept an informal Colt SP1 notes about serial numbers that was discussed in a large AR site survey. 1983 - 1985. 2116XX. 173XXX. 1982. 173XXX. 140XXX. So yours would be made about 1983, a lot of people said that the production of the SP1 model ended in 1982, but they probably made some more from 1983 to 1985.

Oct 30, 2023 · Seeking information on serial numbers. Two single action 45s with three digit serial numbers. One ends with the letter T. ... Colt Government Model .45 acp 100th ... 1911/1911A1 Production Numbers. Colt manufactured 60,000 pistols in the Ithaca serial number range (856405-916404), 41,696 in the Remington Rand serial number range (916405-958100), and 4,171 in the US&S serial …Colt serial numbers ran from about 150,000 to about 305,000. Army service numbers started at #1 (sent to Maxim Munition Corp., Watertown, NY, for ammunition testing) and there were at least 154,802 guns built. ... Your Colt M1917 was delivered to the Government during the week of November 2, 1918 as part of a weekly shipment of 3000 …The CR serial number prefix does not mean it's an Expanse lower end model, there are also Expanse model CE1000 and CE2000 that have the LE prefix serial numbers. ... Colt 1911 Government Model Series 80 .45 pistol owner since 1984 Colt M4 Carbine owner since 2011 NRA Life Member since 1973. Reactions: WVCOLT and …I have a colt AR-15 that I called and checked the serial number and found out the year is 2003. It is marked with the restricted military/government/ law enforcement only on one side and has AR-15 A2 Gov't carbine cal. 223 with a LGC 029xxx serial number. It also has colt defense, Hartford conn USA stamped above the trigger.

Many USGI 1911 pistols were "brought home" (stolen) from the military, and the "owner" removed the numbers to prevent identification as stolen government property. The only other other explanation is, this is a factory "lunch-box Special". That is, a gun stolen by a worker, before the serial number was stamped.If you need to know what year the rifle was made from the serial number just call Colt at 1-800-962-COLT (2658), they would provide the info for your rifle. The GS series model R6550 AR-15A2 Government Model was an all pre ban model and production was started in around 1988 and ended in about 1990. I did not have that particular model but I had ...O2020 - Colt Delta Elite - Stainless (STS) - Has a "DS" serial number prefix. O2021 - Colt Delta Elite - Bright Stainless (BSTS) O2010MT - Match Ten - This special edition included a government model slide and barrel assembly, a 10mm Gold Cup receiver assembly, a special rollmark "Match 10" on the left slide, and an extra magazine.86655 posts · Joined 2000. #2 · Apr 4, 2018. C ommercial model. That was Colt's way if separating civilian serial numbers from military contracts. Prior to 1950 the C was actually in front of the serial number, not after it. Avoid the temptation to replace everything on your brand-new 1911 just to make it "better".Its serial number is GC02091X. On the front sight is says 609, on the barrel it says 2/95 under the handguars and it is stamped C MP556NATO 1/7. It has a pinned sear block that says COLT, 2 position plastic CAR stock, extractor has a blue insert. Don't see any markings on Upper Reciever, Bolt or carrier.

Colt Serial Number look-up. ... This allows you to look up your own serial numbers and it gives you the model and year built. It found 4 out of 6 of mine. Pretty cool. ... to a bunch of pre-70 Government Models and LW Commanders. Sometimes it provide multiple hits, but always had the gun listed. It doesn't like special characters, but works ...A unique appendix traces the complete serial numbers and year of manufacture of every Colt model. Colt .45 Government Models : Commercial Series : 1912 Through 1970, Including Super .38 and .22 Models, Plus Norwegian and Argentine Copies by Charles W. ClawsonMay 3, 2012 · Purchased a new / used Colt 1911 Mk IV Series 70 about a month ago.....got a call from my gun shop yesterday wanting to re-check the serial number on the gun. He said he received a call from the State Police inquiring about the number as they had thought he got it wrong in the paperwork. Seems the gun was made between 81 - 83 and the number ... CRUFFLER.COM. presents. Dates of Production by Model and Serial Number for Model 1911, .45 ACPNOTE: Colt and Ithaca serial numbers based on shipping records. All other pistols based on procurement records. Charles W. Clawson. Collector's Guide to Colt .45 Service Pistols: Models of 1911 and 1911A1 Third Edition. Fort Wayne, IN 46885-5216. Date Serial Start Serial End Manufacturer Quantity: 1924 700001 710000 Colt 10,000 1937 710001 ...

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U.S. Military M1911 & M1911A1 Pistol: (all manufactures): Covering numbers: 1 - 2693613. Please enter a serial number and click the submit button.In today’s fast-paced world, businesses and consumers alike rely heavily on technology. From smartphones to appliances, almost everything we use has a unique identification code kn...JohnnyP. 14124 posts · Joined 2013. #3 · Jan 2, 2016. All the Ace model had it's slide serial numbered to the receiver. The Service Model Ace had the slide serial numbered to the receiver up to approximately SM 3835 when production was halted in late 1942. Production of the SMA resumed in mid 1945 without the serial numbered slides, and with ...Markings: The left side of the slide is marked “-COLT’S- / GOVERNMENT MODEL / -.38 SUPER CALIBER-” and with a Rampant Colt logo. The right of the frame is marked “COLT’S PT. F.A. MFG. CO. HARTFORD, CONN. U.S.A.” with the serial number. The right side of the slide is marked “-SERIES 80-“. The top of the barrel is marked “-COLT ...The "secret source" we use is Colt themselves. Give them a call at their customer service department. FWIW I can say that your pistol was produced somewhere between 1986 and 1989, as my 1986 SS Gov't is #SS22XXX. Avoid the temptation to replace everything on your brand-new 1911 just to make it "better". Know what you're changing out and why.

In today’s fast-paced world, businesses and consumers alike rely heavily on technology. From smartphones to appliances, almost everything we use has a unique identification code kn...Does anyone know if there is a website that features the serial number ~ dates for Colt Government 380's and/or Mustangs? Save Share. Like. ... Add to quote; Only show this user #2 · Feb 10, 2012. If you have the serial number, just call Colt Customer Service 800-962-2658 . Note: Important message to be posted here soon! …Find historical information on your Colt firearm using our serial number look up search tool. Colt Pistols, Revolvers and rifles are all sought after by serious collectors who value the historical data behind these firearms, our tool helps find that information.For Colt handguns, the most common location for serial numbers is on the frame, typically on the side or underside near the trigger guard or grip. In the case of Colt revolvers, the serial numbers are often found on the frame under the barrel or on the butt. For Colt rifles and shotguns, the serial numbers are commonly situated on the receiver ...The GV prefix on the serial number is interesting. I bought a Gold Cup Trophy Lite in 38 Super in Nov. 2018 and it has a serial number of GV002xxx. Below comparing it to a Gold Cup Trophy in 45ACP from 2015. The GCT Lite is a "series 70" pistol by the way. By the way, I took these pictures before I cleaned the shipping goo off the pistol. During the mid-1950's the serial number data is so mixed as to be almost incomprehensible. As example you may have a model of revolver made in .22 and in .38 Special, with the .22 revolver serial numbers mixed with a different model Colt, and the .38 caliber version of that model in yet a different model range. Even after Colt began using ... Like your serial number MH means Match HBAR and it is a pre ban model R6601. Others are SP prefix for Sporter, ST for Sporter Target, MT for Match Target. Sometimes its random like BD for AR-15A3 Tactical Carbine and TA for AR-15 9mm carbine.The GV prefix on the serial number is interesting. I bought a Gold Cup Trophy Lite in 38 Super in Nov. 2018 and it has a serial number of GV002xxx. Below comparing it to a Gold Cup Trophy in 45ACP from 2015. The GCT Lite is a "series 70" pistol by the way. By the way, I took these pictures before I cleaned the shipping goo off the pistol.Scott Gahimer furnishes serial number and shipping information for M1911, M1911A1, Colt Government Model pistols.Commander: 4.25-inch barrel, 8+1 capacity. Officer: 3.5-inch barrel, 6 and 7+1 capacity. Defender: 3-inch barrel, 7+1 capacity. The venerable Model 1911A1 was manufactured by Colt (and others during World War II) until 1971. Shortly after the war, Colt introduced a new gun, the Commander, which was based on the Colt 1911 Government design.The Fast Method. A simple search on the internet would’ve saved me the embarrassment, and could save yourself too. Thanks to technology, you can now look up a Colt serial number on the internet. Simply go to Colt’s homepage and hover your mouse to the Customer Services tab.18303 posts · Joined 2001. #2 · Jan 5, 2012. You'll have to call Colt to get a production date. The public serial number lists end in 1985. The last Government serial number range shown then was "FG". Call during normal business hours, they'll only give you a production year, no other info on the phone.

For Colt handguns, the most common location for serial numbers is on the frame, typically on the side or underside near the trigger guard or grip. In the case of Colt revolvers, the serial numbers are often found on the frame under the barrel or on the butt. For Colt rifles and shotguns, the serial numbers are commonly situated on the receiver ...

Murphy shows the completion of the bulk of the contract by the end of 1918, with ending serial numbers about 300,000-305,000. Proofhouse doesn't reach that serial range until mid-1920. The war was over in late 1918. I can't understand the government accepting contact weapons in that quantity even in 1919, much less into 1920.4628 posts · Joined 2013. #1 · Feb 14, 2021. I can't find the thread I participated in now, but someone commented on the Government Model in stainless with 72B serial numbers. Something about this stainless steel series being the last with the polished flats on the slide, and that they might be commanding a bit higher price these …Dates of Production by Model and Serial Number for Model 1911A1, .45 ACP. Year: Serial Number Range: Manufacturer: Number Produced: 1924: 700001-710000: Colt: 10000: 1937: 710001-711605: ... * Colt duplicated the following serial number blocks: 60000 pistols in the Ithaca range 856405-916404One way to get the manufacturing date is to go to the Colt site, customer service and click on the serial number lookup, enter the prefix and 6 digit numbers. If no data found, if you still have the factory large plastic bag that wrapped the carbine, look for the date there. We Colt owners call the plastic bag the birth bag.Colt National Match – Chambered in .45 ACP, these were basically Government Model pistols with hand honed actions, match grade barrels, and exceptionally fine blued finish. They were manufactured between 1933 and 1941. Their serial number range will be within C164,800 – C215,000.The leading source for examples of Old Colt Pistols, Revolvers, 1911, M1911, 1911A1, M1911A1, Government Model, National Match, 38 Super, Pocket Auto, Vest Pocket, Model 1905, Detective Special, Bankers Special, New Service, Police Positive and other Colt Firearms. Colt serial number ship dates for Pre 70-Series Guns.C-Prefix 1911/1911A1. This site is designed for "Collector's" and "Historian's". It is for the study and sharing of knowledge of Colt's Government Model, sometimes referred to as the "Commercial Model" manufactured between 1911 and 1949. Introduced in 1932 the "National Match" Government Model is also included.Pre-WWII (circa 1925-1942) Colt M1911A1 commercial models run the serial number range C138,533-C215,000 while post-war serial numbers until 1950 ran with serial numbers C221,000-C240,227. After 1950, Colt changed commercial 1911A1 production to using a “C” suffix rather than as a prefix, i.e., 240,228C, and closed out the series in 1970 ...

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Finally, BATF has allowed some pre-ban damaged to be replaced with post-ban lowers with numbers outside the ranges given below while retaining the grandfathered status. They will send a letter documenting this and allowing the original manufacturer to proceed with the replacement. Colt ( 800) 962-COLT. Year. Serial Number Range. Pre Ban. Post Ban.The GV prefix on the serial number is interesting. I bought a Gold Cup Trophy Lite in 38 Super in Nov. 2018 and it has a serial number of GV002xxx. Below comparing it to a Gold Cup Trophy in 45ACP from 2015. The GCT Lite is a "series 70" pistol by the way. By the way, I took these pictures before I cleaned the shipping goo off the pistol.May 2, 2021 · 86646 posts · Joined 2000. #2 · May 2, 2021. It's one of the current O1911C Classic models, except that somebody has replaced the grips with some aftermarket aluminum ones and held them in place with some ill-fitting oversized thin grip screws. In addition to that the slide stop has been replaced with an aftermarket one and it has a non-Colt ... Aug 8, 2023 · The Colt AR-15 serial number contains vital information regarding the manufacture date, location and model of your rifle. By decoding the serial number, you can identify when your rifle was made and if it is an authentic Colt firearm. The first two letters represent the month and year of production respectively, while subsequent digits indicate ... The Colt M1911 - Description. The Colt M1911 is a handgun designed for the U.S. Military for use on the battlefield. It is also known as The Colt Government because it was designed for and adopted by the United States Armed forces. It is the first self-loading pistol developed in the United States. The M1911 is magazine-fed, single-action, semi ...Double Action Series 90, Caliber: 380 & 9mm Auto Pistols (Pony, Pony Pocketlite, Pocket Nine) Double Eagle. Gold Cup National Match MK IV/Series 70. Series 70 / Government Model. Government Model MKIV Series 70 (Model: O1970A1) Huntsman Automatic Pistol. Series 80 & 90 Pistols (Government Model, M1991A1 Models, Combat Target, Combat …The term "1911" or "1911-A1" is used only for military issue pistols. The "Government Model" marking is used only on Colt commercial models. This is confusing because the military 1911 or 1911A1 is a government model pistol, but that term is a commercial marking. So, 1911 or 1911A1 stamps are used only on military issue guns no …Perhaps like many of you, I inherited my career Army (11th Airborne) dad's Colt 1911 A1. It has a 7 number serial number rather than the usual 6 number serial number. I've tried searching various sources for a serial number match but have been unsuccessful at finding a match. He was on a pistol team, I don't know if it was company, regimental ...If you need to know what year the rifle was made from the serial number just call Colt at 1-800-962-COLT (2658), they would provide the info for your rifle. The GS series model R6550 AR-15A2 Government Model was an all pre ban model and production was started in around 1988 and ended in about 1990. I did not have that particular model but I …A “C” suffix indicates a Colt Commander pistol while an “M” suffix means it is a Colt Government Model pistol. An “N” suffix denotes a Colt Double Eagle while an “X” suffix indicates it is a Colt Concealed Carry pistol. ... Colt Serial Number Verification. Verifying a Colt serial number is not difficult. It’s important to make ...Many products you have in your home have unique serial numbers printed on them. Companies assign serial numbers to their products. If you ever have to contact a company regarding a...1911/1911A1 Production Numbers. Colt manufactured 60,000 pistols in the Ithaca serial number range (856405-916404), 41,696 in the Remington Rand serial number range (916405-958100), and 4,171 in the US&S serial … ….

What I need to research is the application of the serial numbers. I think I remember that Colt only stamped the serial number under the mainspring housing and the Argentinean government stamped the italicized numbers on the barrel, slides, and frames upon receipt during inspections. I think I read something about discrepancies in the …Manufacturer: Colt's PT. F.A. Mfg. Co. Model: Government Model 380 Mark IV Series 80 Serial Number: RR37076 Caliber Info:.380 ACP Condition: Used - Minor Wear Barrels: 3 inches (76.2mm) Action: Single Action Stock: Plastic Colt Medallion Grips Finish: Blued Sights: FixedI have a colt AR-15 that I called and checked the serial number and found out the year is 2003. It is marked with the restricted military/government/ law enforcement only on one side and has AR-15 A2 Gov't carbine cal. 223 with a LGC 029xxx serial number. It also has colt defense, Hartford conn USA stamped above the trigger.The GV prefix on the serial number is interesting. I bought a Gold Cup Trophy Lite in 38 Super in Nov. 2018 and it has a serial number of GV002xxx. Below comparing it to a Gold Cup Trophy in 45ACP from 2015. The GCT Lite is a "series 70" pistol by the way. By the way, I took these pictures before I cleaned the shipping goo off the pistol.I came across an early commercial Colt 1911 that has the serial number on the left side of the frame. Was the serial number on a early commercial colt 1911, made in 1912, located on the left side of the frame. And was the slide markings on the right "Colt Automatic Calibre 45" located under the ejection port. Typically the serial number is on …Colt serial numbers can be challenging to interpret if you lack experience.While these model codes have little effect on firearms performance, they help determine a firearm’s origin and history. We will look at the various methods of how to read colt serial numbers, the suffixes and prefixes, the colt model code, and how to determine the date of …The serial number appears only in one place, on the right side of the frame as others have indicated. If it is no longer there, for whatever the reason, the gun is not legal to possess. Ps, 1550vt, My pre-war National Match Colt (1935) did have the serial number stamped on the slide beaneath the firing pin stop.Park trailers and manufactured homes have identifying tags usually referred to as labels or plates that display information, such as the manufacturer, serial number or vehicle iden...A “C” suffix indicates a Colt Commander pistol while an “M” suffix means it is a Colt Government Model pistol. An “N” suffix denotes a Colt Double Eagle while an “X” suffix indicates it is a Colt Concealed Carry pistol. ... Colt Serial Number Verification. Verifying a Colt serial number is not difficult. It’s important to make ...86649 posts · Joined 2000. #2 · Feb 21, 2017. We'll need a lot more information than that to help you, and pictures would be even better. Original Series 70 .45 pistols had serial numbers that either began or ended with various prefixes like 70B, B70, G70, etc. The newer Series 70 reproductions have serial numbers starting with 71B, … Colt government serial numbers, 18303 posts · Joined 2001. #2 · Jan 5, 2012. You'll have to call Colt to get a production date. The public serial number lists end in 1985. The last Government serial number range shown then was "FG". Call during normal business hours, they'll only give you a production year, no other info on the phone., Learn how to read Colt 1911 serial numbers with this easy-to-follow guide. Includes information on all Colt 1911 models, including the Government Model, Commander, and Officer's Model. Skip to content, According to Mr. Clawson's book, 1917-18 Colt produced serial numbers 186201 thru 209586 in a 23,386 pistol shipment. And indicates that 1918 production of that shipment was serial numbers 204987 thru 209586, which 205181 would have fallen into. ... Commercial Colt Government Model, Ace, SM Ace, Super .38 and Commander pistols; …, You can use a Colt serial number lookup tool or reference guide to decode the serial number and determine the year of manufacture. 4. Are there any specific markings or codes to look out for on the Colt 1911? Colt 1911s may have additional markings or inspector stamps that provide more information about the gun’s history. 5., Colt Semiauto Pistols. Colt's MKIV/Series 70 .45cal Government Model with Sequential Serial Numbers. 1921 Views 20 Replies 7 Participants Last post by MaximRecoil, Mar 26, 2015. N. …, Markings: The left side of the slide is marked “-COLT’S- / GOVERNMENT MODEL / -.38 SUPER CALIBER-” and with a Rampant Colt logo. The right of the frame is marked “COLT’S PT. F.A. MFG. CO. HARTFORD, CONN. U.S.A.” with the serial number. The right side of the slide is marked “-SERIES 80-“. The top of the barrel is marked “-COLT ..., Colt Semiauto Pistols. Colt's MKIV/Series 70 .45cal Government Model with Sequential Serial Numbers. 1921 Views 20 Replies 7 Participants Last post by MaximRecoil, Mar 26, 2015. N. …, #1 · May 23, 2018. Good morning all, Just wanted to share should be a significantly more complete database for Colt manufacture dates, by serial number, on the Colt website. It can be used at the link below. Colt's Manufacturing LLC. I've been working over the last couple months to have as complete of a database of numbers as possible., NOTE: Colt and Ithaca serial numbers based on shipping records. All other pistols based on procurement records. Charles W. Clawson. Collector's Guide to Colt .45 Service Pistols: Models of 1911 and 1911A1 Third Edition. Fort Wayne, IN 46885-5216. Date Serial Start Serial End Manufacturer Quantity: 1924 700001 710000 Colt 10,000 1937 710001 ..., Firearms, handguns, pistols, rifles, revolvers. Serial Number Lookup Instantly retrieve vital product details, warranty information, and exclusive insights through our Serial Number Look-Up feature., 1966-1967. US Property marked XM16E1 Colt's and M16A1, both Colt Model 603. There are also a small number of US Air Force M16 Colt's Model 604 found in this serial number range. Serial numbers in this range were not run in order. M16A1’s have been observed with serial numbers as low as 604,505, and XM16E1’s have serial numbers as high as ..., Colt's website now has a serial number look up, however when I put in the numbers on my Sporter Match HBAR and my Government model both came up "not in data base". I just called Colt's CS and they were able to give me DOM on both guns. FWI, MH 0039xx is 1990 and GS 0068xx is 1989. The GOVT is a green label gun with the evil …, Step 1: Go to Colt's Manufacturing LLC. Step 2: Hover the mouse to “Customer Service”. Step 3: Click “Serial Number Lookup”. Once you get to that page, enter all the characters and the numbers on your …, The serial number is in the early "No.14" format and forward location on the right of the frame which were changed at serial numbers 4501 and 7501 respectively. The right side of the slide is marked with the iconic "MODEL OF 1911. U.S. ARMY". The pistol shows the early lustrous, high polish, mirror-like blue finish and fiery nitre blue small parts., If you have a Series 80 9mm, please post information about the serial number range of your gun and any information you may have about its production date. To get things started, the distributor's invoice to the dealer from whom I purchased my M1991A1 9mm (Model O1992) was dated August of 1998 and the gun's serial number is NN012xx., When I enter it into the Colt serial number lookup, only one gun comes up (not an saa). Entering the numbers previous and after 6150, a lot of Colts come up including saa, mfg. 1874. ... after adding in the U.S. Government contracts. Your #6150 would be about April-May 1874. The first 12,000 or so Colt SAA's sold to the government are not ..., One way to get the manufacturing date is to go to the Colt site, customer service and click on the serial number lookup, enter the prefix and 6 digit numbers. If no data found, if you still have the factory large plastic bag that wrapped the carbine, look for the date there. ... Colt 1911 Government Model Series 80 .45 pistol owner since 1984 ..., The police pistols are serial numbered within the C165000 through C171000 range. The right sides of the slides are marked with the normal Colt writing and logo. The left sides are marked POLICIA DE LA CAPITAL. On the right sides of the frames is marked, “Government Model” over the serial numbers., Scott Gahimer furnishes serial number and shipping information for M1911, M1911A1, Colt Government Model pistols., It has an LGC serial prefix which I have been unable to research. I can't seem to find any info on aprox date of manufacture or production numbers. The two mags included are dated 9-03. It is marked as "AR-15 A2 Government Carbine Cal. 223" with Colt Defense Hartford Conn USA above the trigger., Colt 1911A1 Government Model Serial Number C159001 - Manufactured ca. 1930. Pistol is inscribed on the top of the slide between the front sight and ejection port "B.V. CLARK, UNITED STATES NAVY". Lt. Baylies Voorheis Clark graduated from the United States Naval Academy in 1930. Lt. Clark was killed during bombing practice at sea on May 23, 1941., Best WordPress themes for government agencies, if you are looking to create any kind of site related to gov departments, have a look at these designs Trusted by business builders w..., 3 posts · Joined 2023. #1 · Oct 25, 2023. As we all know, a First Generation Colt SAA will have the serial number in three places, the bottom of the frame, the bottom of the trigger housing, and the bottom of the grip. As we also know, the vast majority of the so called "Artillery" models that were reworked into the configuration by Colt ..., Any restaurant reviewer worth his sea salt needs talented taste buds. A travel writer should enjoy elite status with her favorite airline. And a home-improvement… By clickin..., A tribute to the revered Commercial Government Model pistols of the past, the 1911 Classic features the Series 70 firing system and rollmarks, National Match barrel, staked on front sights, and spurred hammer. Chambered in .45 ACP and blued, this firearm is a pure and simple 1911, designed for you to make it your own. Barrel Length: 5 in., Then on the right side on the slide it says National Match Colt automatic caliber .45 Then just above the trigger, on the right side I have Government Model and what I can only assume is a serial number of C185xxx The last thing I see is a very small 60 stamped on the trigger guard up near the frame. It shoots excellently and is a family …, I was recently informed that Colt discontinued Serial Numbering their slides on Service Model Aces at serial SM3836. ... From "Colt .45 Government Models", "Slides were serial numbered under the firing pin stop through serial number SM 3836." I believe this same information is found in his "big book"., Colt Serial Numbers – What The Caliber Numbers Mean. The second number in the sequence is the code for the caliber of the gun, and these run from the number ‘4’ to the number ‘9’. The number ‘4’ indicates a caliber between .20 and .32. The number ‘6’ would denote a caliber of .357; there is no number ‘5’ in this caliber ..., Aug 21, 2018 · Commander: 4.25-inch barrel, 8+1 capacity. Officer: 3.5-inch barrel, 6 and 7+1 capacity. Defender: 3-inch barrel, 7+1 capacity. The venerable Model 1911A1 was manufactured by Colt (and others during World War II) until 1971. Shortly after the war, Colt introduced a new gun, the Commander, which was based on the Colt 1911 Government design. , The Colt Government Model 1911 is referred to by many as "the world's greatest handgun". Colt introduced this model in 1970 as a newer version of the Model 1911A1. The major changes were a slightly heavier slide and a slotted collet barrel bushing. From 1970 to 1976 the serial numbers had a prefix of "70G", from 1976 to 1980 they had a suffix ..., 258 posts · Joined 2004. #1 · Feb 19, 2012 (Edited) I just noticed that the Series 70 serial numbers look like they flipped from 71Bxxxx to 72Bxxxx at the very end of 2012 production, the anniversary markings were dropped, and the right side of the slide now has no rollmarks. The highest 71B number I have seen with anniversary markings is ..., O2020 - Colt Delta Elite - Stainless (STS) - Has a "DS" serial number prefix. O2021 - Colt Delta Elite - Bright Stainless (BSTS) O2010MT - Match Ten - This special edition included a government model slide and barrel assembly, a 10mm Gold Cup receiver assembly, a special rollmark "Match 10" on the left slide, and an extra magazine., Pre-WWII (circa 1925-1942) Colt M1911A1 commercial models run the serial number range C138,533-C215,000 while post-war serial numbers until 1950 ran with serial numbers C221,000-C240,227. After 1950, Colt changed commercial 1911A1 production to using a “C” suffix rather than as a prefix, i.e., 240,228C, and closed out the series in 1970 ...