Wallace China Date Codes

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
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
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
Unknown
A-6
B-6
March
7-S
7-Q
7-P
7-U
7-T
7-R
Unknown
Unknown
A-7
B-7
July
8-S
8-Q
8-P
8-U
8-T
8-R
Unknown
Unknown
A-8
B-8
November
9-S
9-Q
9-P
9-U
9-T
9-R
Unknown
Unknown
A-9
B-9
December
10-S
10-Q
10-P
10-U
10-T
10-R
Unknown
Unknown
A-10
B-10
September
11-S
11-Q
11-P
11-U
11-T
11-R
Unknown
Unknown
A-11
B-11
August
12-S
12-Q
12-P
12-U
12-T
12-R
Unknown
Unknown
A-12
B-12
October
14-S
14-Q
14-P
14-U
14-T
14-R
Unknown
Unknown
A-14
B-14
Year/Month
1961
1962
1963
1964
January
C-2
D-2
E-2
F-2
April
C-3
D-3
E-3
F-3
May
C-4
D-4
E-4
F-4
February
C-5
D-5
E-5
F-5
June
C-6
D-6
E-6
F-6
March
C-7
D-7
E-7
F-7
July
C-8
D-8
E-8
F-8
November
C-9
D-9
E-9
F-9
December
C-10
D-10
E-10
F-10
September
C-11
D-11
E-11
F-11
August
C-12
D-12
E-12
F-12
October
C-14
D-14
E-14
F-14

Notes: Date code may or may not contain a (dash).