1911/A1

Datasheet

1911/1911A1 Production Numbers
Select one: M1911 Serial Numbers — M1911A1 Serial Numbers — Government Model (commercial) Model of 1911 Production
Year	Serial Number Range	Manufactured by		Special Notes	Quantity
1912	1-500	Colt			500
	501-1000	Colt		USN	500
	1001-1500	Colt			500
	1501-2000	Colt		USN	500
	2001-2500	Colt			500
	2501-3500	Colt		USN	1000
	3501-3800	Colt		USMC	300
	3801-4500	Colt			700
	4501-5500	Colt		USN	1000
	5501-6500	Colt			1000
	6501-7500	Colt		USN	1000
	7501-8500	Colt			1000
	8501-9500	Colt		USN	1000
	9501-10500	Colt			1000
	10501-11500	Colt		USN	1000
	11501-12500	Colt			1000
	12501-13500	Colt		USN	1000
	13501-17250	Colt			3750
1913	17251-36400	Colt			19,150
	36401-37650	Colt		USMC	1250
	37651-38000	Colt			350
	38001-43800	Colt		USN	5800
	43801-43900	Colt		USN – USS NEW YORK	100
	43901-44000	Colt		USN – USS TEXAS	100
	44001-60400	Colt			16,400
1914	60401-72570	Colt			12,170
	72,571-75,600	Springfield			11,285
	83856-83900	Colt			45
	83901-84400	Colt		USMC	500
	84401-96000	Colt			11,600
	96001-97537	Colt		USN – Various Ships	1537
	97538-102596	Colt			5059
1915	75601-83855	Springfield
	102597-107596	Springfield			5000
	107597-109500	Colt			1904
	109501-110000	Colt		USN – NAVAL MILITIA	500
	110001-113496	Colt			3496
	113,497-115,600	Springfield			7070
	120567-125566	Colt			5000
1916	115,601-120,566	Springfield			4,966
	133187-137400	Colt			4214
1917	125,587-127,998	Springfield			2,412
	137401-151186	Colt			13,786
	151187-151986	Colt		USMC	800
	151987-185800	Colt			33,814
	185801-186200	Colt		USMC	400
	186201-209586	Colt			23,386
	209587-210386	Colt		USMC	800
	210387-215386	Colt		Reserved for receivers	5000
	215387-216186	Colt		USMC	800
	216187-216586	Colt			400
	216587-216986	Colt		USMC	400
1918	216987-217386	Colt		USMC	400
	217387-223952	Colt			6566
	223953-223990	Colt		USN	38
	223991-232000	Colt			8010
	232001-233600	Colt		USN	1600
	233601-580600	Colt			347,000
	1-13381	Remington Arms – UMC			13,381
1919	13381-21676	Remington Arms – UMC			8,295
	580601-629500	Colt			48900
	629501-717386	Colt			Suspended

Model of 1911A1 Production
1924	700001-710000	Colt			10,000
1937	710001-711605	Colt		USN 836, USA 769	1605
	711606-712349	Colt		USN	744
1938	712350-713645	Colt			1296
1939	713646-717281	Colt		USN	3,636
1940	717282-721977	Colt			4696
1941	721978-756733	Colt			34,756
	S800001-S800500	Singer Mfg. Co.			500
	H800501-H801000	Assigned to H&R			0
1942	756734-793657	Colt			36,924
	793658-797639	Colt		USN	3982
	797640-800000	Colt			2361
	801001-856100	Colt
	856101-861999	Colt
1942-43	916405-1041404	Remington Rand		1943 = 921700-1,041,404 Colt duplicated these SN	125,000
1943	862000-958100	Colt
	856405-916404	Ithaca		Colt duplicated these SN	60,000
	*856101-856300*	*Rock Island Arsenal, Renumbered*			*200*
	*856301-856304*	*Augusta Arsenal, Renumbered*			4
	*856305-856404*	*Rock Island Arsenal, Renumbered*			*100*
	1041405-1096404	US & S		Colt duplicated these SN	55,000
	1088726-1092896	Colt			4171
	1096405-1208673	Colt		1944 starts at 1155000	112,269
	1208674-1279673	Ithaca		1944 starts at 1235000	71,000
	1279699-1441430	Remington Rand		1944 starts at 1363700	161,732
	1441431-1471430	Ithaca			30,000
1944	14711431-1609528	Remington Rand			138,098
	1609529-1743846	Colt		1945 1720000-1743846	134,318
	1743847-1816641	Remington Rand			72,795
	1816642-1890503	Ithaca		1945 1816642-1845997	73,862
	1890504-2075103	Remington Rand		1945 starts at 2031600	184,600
1945	2075104-2134403	Ithaca		1945 2110465-2134403	59,300
	2134404-2244803	Remington Rand			110,400
	2244804-2380013	Colt		Last Colt 2368781	approx 119,450
	2380014-2619013	Remington Rand		Last RR 2465139	85,126
	2619014-2693613	Ithaca		Last Ithaca 2660318	41,305
Duplicate Serial 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 number range (1088726-1092896). Ithaca and Remington Rands where not manufactured or shipped in numerical order.
Colt Commercial Production Serial Numbers
Year			Starting Production Number
1912			C1
1913			C1900
1914			C5400
1915			C16600
1916			C27600
1917			C75000
1918			C99000
1919			C106000
1920			C121000
1921			C127000
1922			C129000
1923			C134000
1924			C135000
1925			C140000
1926			C145000
1927			C151000
1928			C152000
1929			C155000
1930			C156000
1931			C159000
1932			C161000
1933			C164800
1934			C174600
1935			C178000
1936			C179800
1937			C183200
1938			C188700
1939			C189600
1940			C198900
1941			C199300
1942			C208800-C215018
1946			C220001
1947			C222001
1948			C232000
1949			C238501
1950			C240001 then @ 240228C moved C to end of Serial Number
1951			247701C

Exterior Markings

Listing of known slide and frame/receiver markings (not complete)
AA: Augusta Arsenal. Found on the receivers of guns rebuilt or inspected at the arsenal. RIA: Rock Island Arsenal. Found on the receivers of guns rebuilt or inspected at the arsenal. SA: Springfield Arsenal Rebuild Stamp ANAD/AN: Anniston Army Depot (Anniston, Alabama) observed with a date stamp following it (MM YY) in 1975 P: Can be found on top of slides on WWII A1s as well as on the Barrel and Frame below the clip (magazine) release. United States Property: This stamp is found on the frame and slides of 1911s manufactured for and owned by the US armed forces. In most cases a gun with the property stamp will not have a “c” in the serial number. S: located *after* *finish* by the disconnector on top of the frame indicates field service. G: Located on top of frame by disconnector indicates gun was made to fill a Government contract. Stamped before the finish is applied. H or H: Provisional acceptance mark. Located on top of frame by disconnector indicates gun inspected by Ordinance Inspector. Stamped before finish applied. Francis L. Hosmer used this stamp on Colts 1911s and M1917 revolvers from 1911 to 1919. Also found on barrels and slides.

Inspection initials found on 1911/1911A1s; located under the slide stop on the left side of the gun
WGP Monogram: Walter G. Penfield, Major Colt S/N 1-101,500 GHS Monogram: Gilbert H. Stewart. Found on Colt M1911s SN 101,500 to 230,000, M1907, M1917, M1903, and M1 rifles at different periods. JMG Monogram: J.M. Gilbert found on Colt 1911s from 1917 to 1918 SN 230,001 to 302,000. Eagle/Number: This replaced the personalized monograms about S/N 300,000 to end of WWI production (1919) FJA: Frank J. Atwood. Found on Remington Rand and Ithaca 1911A1s (entire production). EEC: Edmund E. Chapman Remington UMC S/N 1-21676 WTG: Walter T Gorton Colt S/N 700,000-710,000 CSR: Charles S Reed Colt S/N 717,282-723,000 RS: Robert Sears Colt S/N 723,000 to 750,500 WB: Waldemar Broberg Colt S/N 750,500 to 861,000 GHD: Guy H. Drewry Colt S/N 845,000 to 2,360,600 JSB: John S. Begley, very late 1945 Colt 1911 A1 to end of WWII production (1945-Very rare)

Arsenal Inspectors from Rock Island:
EB: Elmer Bjerke was promoted on January 6th, 1947 to Forman of small arms inspection. He was responsible for the final inspection of new and overhauled small arms. He served in that capacity until 1958. All small arms inspected under his supervision bear the markings “RIA” for Rock Island Arsenal and “EB” for Elmer Bjerke. FK: Frank Krack was Assistant Foreman of the Inspection Division at RIA from September 17, 1941 until he retired on July 19th, 1946. During that period all small arms inspected under his supervision would be stamped with his initials “FK” as well as those of the Rock Island Arsenal “RIA“.

1911/A1

Datasheet

1911/1911A1 Production Numbers

Exterior Markings