COLT 1911
1937 TO 1945
1937
U .S. NAVY
SERIAL NUMBERS
Model
Year
Serial No
Model
Year
Serial No
Model
Year
Serial No
COLT
1937
710001
711606
COLT
1937
712350
712349
COLT 1911
1938
MODEL
YEAR

SERIAL
NO
MODEL
SERIAL
NO
MODEL
SERIAL
NO
COLT
1938
712350
713645
COLT 1911
1939
U .S. NAVY
SERIAL NUMBERS
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1939
713646
717281
COLT 1911
1940
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1940
717282
721281
COLT 1911
1941
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1941
721978
756733
SINGER *
1941
8000001
S805500
COLT 1911
1942
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1942
756734
793733
COLT
1942
797640
800000
COLT
1942
801001
856100
H&R **
1942
H800501
H801000
COLT 1911
1942
U .S. NAVY
SERIAL NUMBERS
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1942
793734
797639
COLT 1911
1943
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1943
856101
958100
COLT
1943
10887726
10908673
COLT
1943
1096405
1208673
ITHACA
1943
856405
916404
ITHACA
1943
1208674 1279698
ITHACA
1943
1441431
1471430
REPLACEMENT FRAME SERIALS
1943
856101
856404
REPLACEMENT FRAME SERIALS
1943
1279699
1279698
REMINGTON
RAND
1943
916405
1041404
REMINGTON RAND
1943
1279699
1441430
REMINGTON RAND
1943
1471431
1609528
UNION SWITCH
SIGNAL
1943
1041405
1096404
COLT 1911
1944
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1944
1609529
1743846
REMINGTON
RAND
1944
1743847
1816641
REMINGTON
RAND
1944
1890504
2075103
ITHACA
1944
1816642
1890503
COLT 1911
1945
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
MODEL
YEAR
SERIAL
NO
COLT
1945
2244804
2380013
REMINGTON
RAND
1945
2134404
2244803
REMINGTON RAND
1945
2380014
2619013
ITHACA
1945
2075104
2134403
ITHACA
1945
2619014
2693613

Last serial number manufactured by Colt is 2368781.
Last serial number manufactured by Remington Rand is 2465139.
Last serial number manufactured by Ithaca is 2660318.
The following are serial numbers that Colt duplicated :
In the Ithaca serial number range 60 thousand guns from serials 856405 to 916404.
In the Remington Rand serial range 41696 guns in serial number range from 916405 to 958100.
In the Union Switch and Signal range 4,171 guns in serial number range from 1088726 to 1092896.
There were 617,341 guns manufactured by Colt.
There were 9967 guns manufactured by Colt for the U.S. Navy.
There were 500 guns manufactured by the Singer Sewing Machine Co.
There were 55000 guns manufactured by Union Switch & Signal.
There were 877,751 guns manufactured by Remington Rand.
There were 335,167 guns manufactured by Ithaca.

There are 2 Remington Rand experimental revolvers knowm serial numbers : ERS10 and ERS 4
Colt experimental national match with experimental firing pin safety serial number : 201892 .
Colt 1911 with experimental 11 inch barrel and 20 round clip manufactured 1918 -1919 serial number : 014642 .
Colt 38 Super experimental with 20 round clip serial number : 204
For more on this subject we recommend the following books :
COLT 45 SERVICE PISTOL by Charles W . Clawson
BOOK OF COLT FIREARMS by R. L. Wilson