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| Wallace has a very odd number (dash) letter date code system. The letter represents the year starting with "A" for 1931 and continues until the letter "O" for 1945. Then the letter code begins with "Z" for 1946 and reverses back in an unknown pattern until the letter "R" for 1956. This code may continue for the following two years until 1958 but that code has yet to be cracked. Then starting in 1959 the code starts with the letter "A" again for 1959 and finishes with "F" for 1964. The number code is just as confusing, starting with 2 for January and jumping around until 14 for October. December ends with 10. The number 13 is skipped! Please see the charts below for better clarification. Usually the (dash) is used. Lastly, in the early years an unknown double letter code was used. If you have any information regarding the indecipherable double letter code, we would love to add it to our date code pages! |
| Year/Month |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
| January |
2-A |
2-B |
2-C |
2-D |
2-E |
2-F |
2-G |
2-H |
2-I |
2-J |
| April |
3-A |
3-B |
3-C |
3-D |
3-E |
3-F |
3-G |
3-H |
3-I |
3-J |
| May |
4-A |
4-B |
4-C |
4-D |
4-E |
4-F |
4-G |
4-H |
4-I |
4-J |
| February |
5-A |
5-B |
5-C |
5-D |
5-E |
5-F |
5-G |
5-H |
5-I |
5-J |
| June |
6-A |
6-B |
6-C |
6-D |
6-E |
6-F |
6-G |
6-H |
6-I |
6-J |
| March |
7-A |
7-B |
7-C |
7-D |
7-E |
7-F |
7-G |
7-H |
7-I |
7-J |
| July |
8-A |
8-B |
8-C |
8-D |
8-E |
8-F |
8-G |
8-H |
8-I |
8-J |
| November |
9-A |
9-B |
9-C |
9-D |
9-E |
9-F |
9-G |
9-H |
9-I |
9-J |
| December |
10-A |
10-B |
10-C |
10-D |
10-E |
10-F |
10-G |
10-H |
10-I |
10-J |
| September |
11-A |
11-B |
11-C |
11-D |
11-E |
11-F |
11-G |
11-H |
11-I |
11-J |
| August |
12-A |
12-B |
12-C |
12-D |
12-E |
12-F |
12-G |
12-H |
12-I |
12-J |
| October |
14-A |
14-B |
14-C |
14-D |
14-E |
14-F |
14-G |
14-H |
14-I |
14-J |
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| Year/Month |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
1950 |
| January |
2-K |
2-L |
2-M |
2-N |
2-O |
2-Z |
2-Y |
2-W |
2-V |
2-X |
| April |
3-K |
3-L |
3-M |
3-N |
3-O |
3-Z |
3-Y |
3-W |
3-V |
3-X |
| May |
4-K |
4-L |
4-M |
4-N |
4-O |
4-Z |
4-Y |
4-W |
4-V |
4-X |
| February |
5-K |
5-L |
5-M |
5-N |
5-O |
5-Z |
5-Y |
5-W |
5-V |
5-X |
| June |
6-K |
6-L |
6-M |
6-N |
6-O |
6-Z |
6-Y |
6-W |
6-V |
6-X |
| March |
7-K |
7-L |
7-M |
7-N |
7-O |
7-Z |
7-Y |
7-W |
7-V |
7-X |
| July |
8-K |
8-L |
8-M |
8-N |
8-O |
8-Z |
8-Y |
8-W |
8-V |
8-X |
| November |
9-K |
9-L |
9-M |
9-N |
9-O |
9-Z |
9-Y |
9-W |
9-V |
9-X |
| December |
10-K |
10-L |
10-M |
10-N |
10-O |
10-Z |
10-Y |
10-W |
10-V |
10-X |
| September |
11-K |
11-L |
11-M |
11-N |
11-O |
11-Z |
11-Y |
11-W |
11-V |
11-X |
| August |
12-K |
12-L |
12-M |
12-N |
12-O |
12-Z |
12-Y |
12-W |
12-V |
12-X |
| October |
14-K |
14-L |
14-M |
14-N |
14-O |
14-Z |
14-Y |
14-W |
14-V |
14-X |
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| Year/Month |
1951 |
1952 |
1953 |
1954 |
1955 |
1956 |
1957 |
1958 |
1959 |
1960 |
| January |
2-S |
2-Q |
2-P |
2-U |
2-T |
2-R |
Unknown |
Unknown |
A-2 |
B-2 |
| April |
3-S |
3-Q |
3-P |
3-U |
3-T |
3-R |
Unknown |
Unknown |
A-3 |
B-3 |
| May |
4-S |
4-Q |
4-P |
4-U |
4-T |
4-R |
Unknown |
Unknown |
A-4 |
B-4 |
| February |
5-S |
5-Q |
5-P |
5-U |
5-T |
5-R |
Unknown |
Unknown |
A-5 |
B-5 |
| June |
6-S |
6-Q |
6-P |
6-U |
6-T |
6-R |
Unknown |