Winchester Model 21 Serial Numbers

HOME Catalogs Blueprints Advertisements Instruction Manuals Tables of Specifications Pamphlets

Winchester Model-21

Serial Number vs. Date of Completion

Serial #	Gauge	Date Completed
2,415		Oct-35
3,707		1934
3,947		May-37
4,320	20	1933
4,641		1931
4,870	20	No Record
5,311		No Record
through
5,319		No Record
5,437		1934
6,290		1935
6,515	16	Oct-1948
6,839		Jul-1940
6,858	16	No Record
8,186		1933
8,220		Apr-1935
8,683		Aug-35
8,885		1947
9,275		1939
9,411		1948
9,622	20-3in.	Oct-1948
10,407		Dec-35
10,411		1936
10,634		Aug-36
10,672		Apr-36
11,014		Oct-36
11,334		Apr-37
11,892		Jan-37
12,429		1938
13,064		Jan-40
14,752		1947
16,561		Aug-43
16,742		May-47
17,650		Jul-46
18,958		Oct-47
19,754		Sep-47
21,634		Aug-48
23,359		Jan-49
23,611		Mar-49
24,708		Jan-51
25,425		Aug-49
25,923		1950
25,940		1950
26,030		Aug-50
26,716		1953
26,754		Mar-51
W26,881		Mar-71
26,966	20 3-In.	Apr-52
26,968		1955
27,396		Aug-53
27,525		Sep-52
27,880		Oct-54
28,863		1953
28,966		1961
30,001		Jan-60
30,136	12	Dec-53
31,310		1954
31,314		1955
31,316		1954
32,079		1956
32,085		1954
W32,153		Jan-70
32,447		Feb-60
32,560		May-65
32,742		May-63
32,803		Aug-63
32,827		Aug-63
W32,862		1975
W32,977		1974
32,984		1967
W33,124		Mar-81

Serial #	Date Completed
4,641	1931
4,320	1933
8,186	1933
3,707	1934
5,437	1934
6,290	1935
8,220	Apr-1935
8,683	Aug-35
2,415	Oct-35
10,407	Dec-35
10,411	1936
10,672	Apr-36
10,634	Aug-36
11,014	Oct-36
11,892	Jan-37
11,334	Apr-37
3,947	May-37
12,429	1938
9,275	1939
13,064	Jan-40
6,839	Jul-40
16,561	Aug-43
17,650	Jul-46
8,885	1947
14,752	1947
16,742	May-47
19,754	Sep-47
18,958	Oct-47
9,411	1948
6,515	Oct-48
9,622	Oct-48
21,634	Aug-48
23,359	Jan-49
23,611	Mar-49
25,425	Aug-49
25,923	1950
26,030	Aug-50
25,940	1950
24,708	Jan-51
26,754	Mar-51
26,966	Apr-52
27,325	Sep-52
26,716	1953
28,863	1953
27,596	Aug-53
30,136	Dec-53
31,310	1954
31,316	1954
27,880	Oct-54
32,085	1954
26,968	1955
31,314	1955
32,079	1956
30,001	Jan-60
32,447	Feb-60
28,966	1961
32,742	May-63
32,803	Aug-63
32,827	Aug-63
32,560	May-65
32,984	1967
W32,153	Jan-70
W26,881	Mar-71
W32,977	1974
W32,862	1975
W33,124	Mar-81

Several readers asked if the age of their Model 21 could be estimated from the serial number. Unfortunately, Winchester didn't use Model 21 receivers in the order the receivers were manufactured. Several authors have reported guns whose final inspection date, as reported on the factory letter, is much later than existing factory receiver production records would suggest. I compiled a table of guns for which I know factory records exist and from guns mentioned by Schwing¹.
The table on the left is sorted by Serial Number and the table on the right is sorted by Completion Date.

Click on the BOLD SERIAL NUMBERS to view the actual factory records.

¹Ned Schwing, Winchester's Finest The Model 21 (Krause Publications, Iola, WI. 1990).