M1911 A1 Serial Numbers
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| Year | Serial Range | Manufacturer | Quantity | Special Notes | Manufacturer | Annual Production | Year |
| 1924 | 700001-710000 | Colt | 10,000 | Transitional | Colt | 10,000 | 1924 |
| 1937 | 710001-711605 | Colt | 1,605 | 836 to USN 769 to Army | 1937 | ||
| 1937 | 711606-712349 | Colt | 744 | USN | Colt | 2,349 | 1937 |
| 1938 | 712350-713645 | Colt | 1,296 | Colt | 1,296 | 1938 | |
| 1939 | 713646-717281 | Colt | 3,636 | USN | Colt | 3,636 | 1939 |
| 1940 | 717282-721977 | Colt | 4,696 | Colt | 4,696 | 1940 | |
| 1941 | 721978-756733 | Colt | 34,756 | Colt | 34,756 | 1941 | |
| 1941 | S800001-S800500 | Singer Mfg. Co | 500 | Singer | 500 | 1941 | |
| 1941 | H800501-H801000 | Assigned to H&R | 1941 | ||||
| 1942 | 756734-793657 | Colt | 36,924 | 1942 | |||
| 1942 | 793658-797639 | Colt | 3,982 | USN | 1942 | ||
| 1942 | 797640-800000 | Colt | 2,361 | 1942 | |||
| 1942 | 801001-856100 | Colt | 55,099 | Colt | 104,264 | 1942 | |
| 1942 | 856101-861999 | Colt | 5,898 | Remington Rand | 5,269 | 1942 | |
| 1942 | 916405-921673 | Remington Rand | 5,269 | Colt Duplicated Numbers | 1942 | ||
| 1943 | 862000-958100 | Colt | 96,100 | 1943 | |||
| 1943 | 856405-916404 | Ithaca | 60,000 | Colt Duplicated Numbers | 1943 | ||
| 1943 | 856101-856300 | Rock Island Arsenal | 200 | X Numbers | 1943 | ||
| 1943 | 856301-856304 | Augusta Arsenal | 4 | X Numbers | 1943 | ||
| 1943 | 856305-856404 | Rock Island Arsenal | 100 | X Numbers | 1943 | ||
| 1943 | 921674-958100 | Remington Rand | 3,427 | Colt Duplicated Numbers | Colt | 212,540 | 1943 |
| 1943 | 958101-1041404 | Remington Rand | 83,301 | Ithaca | 88,475 | 1943 | |
| 1943 | 1041405-1088725 | Union Switch & Signal | 47,321 | Remington Rand | 204,434 | 1943 | |
| 1943 | 1088726-1092896 | Union Switch & Signal | 4,171 | Colt Duplicated Numbers | US&S | 55,000 | 1943 |
| 1943 | 1092897-1096404 | Union Switch & Signal | 3,508 | 1943 | |||
| 1943 | 1088726-1092896 | Colt | 4,171 | 1943 | |||
| 1943 | 1096405-1208673 | Colt | 112,269 | 1943 | |||
| 1943 | 1208674-1279673* | Ithaca* | 28,475 | 1944 starts ca. 1237000* | 1943 | ||
| 1943 | 1279699-1364401 | Remington Rand | 84,703 | 1943 | |||
| 1944 | 1208674-1279673* | Ithaca* | 42,550 | 1944 starts ca. 1237000* | 1944 | ||
| 1944 | 1364402-1441430 | Remington Rand | 77,028 | 1944 | |||
| 1944 | 1441431-1471430 | Ithaca | 30,000 | 1944 | |||
| 1944 | 1471431-1609528 | Remington Rand | 138,095 | 1944 | |||
| 1944 | 1609529-1743846 | Colt | 134,318 | Colt | 134,318 | 1944 | |
| 1944 | 1743847-1816641 | Remington Rand | 72,795 | Remington Rand | 428,974 | 1944 | |
| 1944 | 1816642-1890503** | Ithaca** | 44,500 | Ithaca | 104,400 | 1944 | |
| 1944 | 1890504-2031555 | Remington Rand | 141,052 | 1944 | |||
| 1944 | 2075104-2110454*** | Ithaca*** | 23,350 | 1944 | |||
| 1945 | 1816642-1845997** | Ithaca** | 29,335 | 1945 | |||
| 1945 | 2110455-2134403*** | Ithaca*** | 35,950 | 1945 | |||
| 1945 | 2031556-2075103 | Remington Rand | 43,548 | 1945 | |||
| 1945 | 2134404-2244803 | Remington Rand | 110,400 | Colt | 119,450 | 1945 | |
| 1945 | 2244804-2368781 | Colt | 119,450 | Last Colt 2368781 | Remington Rand | 239,074 | 1945 |
| 1945 | 2380014-2465139 | 85,126 | Last RR 2465139 | Ithaca | 106,590 | 1945 | |
| 1945 | 2619014-2660318 | Ithaca | 41,305 | Last Ithaca 2660318 | 1945 | ||
| RR Type1 | 16,000 | Total M1911-A1 Production 1,896,023 | Colt | 627,305 | |||
| RR Type 2 | 88,000 | Remington Rand | 877,751 | ||||
| RR Type 3 | 773,751 | Ithaca | 335,467 | ||||
| US&S | 55,000 | ||||||
| Singer | 500 |