Walker (Bailey-Walker) China Date Codes

Pieces are date coded by mark and by code. Though some of the earlier pieces may be marked with an easy date code of a 4 digit code which represents the full year. Some of the other earlier pieces and later pieces are marked with either a single or double digit number (dash) double digit number or a letter (dash) double digit number code. Knowing that Bailey-Walker marks are pre 1942 and Walker marks are post 1942 will help identify which code to use.
1923 to 1942:
Bailey-Walker mark – Four digit number codes might represent the year produced.
Year/Month
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
January-December
23
24
25
26
27
28
29
30
31
32
Year/Month
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
January-December
33
34
35
36
37
38
39
40
41
42
1923 to 1942:
Bailey-Walker mark – a single or double digit number(dash)double digit number code is used. The first single digit number of 1-12 represents the month of January to December. The second double-digit number represents the year.
Year/Month
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
January
1-23
1-24
1-25
1-26
1-27
1-28
1-29
1-30
1-31
1-32
February
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
2-32
March
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
April
4-23
4-24
4-25
4-26
4-27
4-28
4-29
4-30
4-31
4-32
May
5-23
5-24
5-25
5-26
5-27
5-28
5-29
5-30
5-31
5-32
June
6-23
6-24
6-25
6-26
6-27
6-28
6-29
6-30
6-31
6-32
July
7-23
7-24
7-25
7-26
7-27
7-28
7-29
7-30
7-31
7-32
August
8-23
8-24
8-25
8-26
8-27
8-28
8-29
8-30
8-31
8-32
September
9-23
9-24
9-25
9-26
9-27
928
9-29
9-30
9-31
9-32
October
10-23
10-24
10-25
10-26
10-27
10-28
10-29
10-30
10-31
10-32
November
11-23
11-24
11-25
11-26
11-27
11-28
11-29
11-30
11-31
11-32
December
12-23
12-24
12-25
12-26
12-27
12-28
12-29
12-30
12-31
12-32
Year/Month
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
January
1-33
1-34
1-35
1-36
1-37
1-38
1-39
1-40
1-41
1-42
February
2-33
2-34
2-35
2-36
2-37
2-38
2-39
2-40
2-41
2-42
March
3-33
3-34
3-35
3-36
3-37
3-38
3-39
3-40
3-41
3-42
April
4-33
4-34
4-35
4-36
4-37
4-38
4-29
4-40
4-41
4-42
May
5-33
5-34
5-35
5-36
5-37
5-38
5-39
5-40
5-41
5-42
June
6-33
6-34
6-35
6-36
6-37
6-38
6-39
6-40
6-41
6-42
July
7-33
7-34
7-35
7-36
7-37
7-38
7-39
7-40
7-41
7-42
August
8-33
8-34
8-35
8-36
8-37
8-38
8-39
8-40
8-41
8-42
September
9-33
9-34
9-35
9-36
9-37
9-38
9-39
9-40
9-41
9-42
October
10-33
10-34
10-35
10-36
10-37
10-38
10-49
10-40
10-41
10-42
November
11-33
11-34
11-35
11-36
11-37
11-38
11-39
11-40
11-41
11-42
December
12-33
12-34
12-35
12-36
12-37
12-38
12-39
12-40
12-41
12-42
1942 to 1953:
Walker China back stamps – A letter(dash)double digit number code was used. The letters A-L represented the months of January to December and the double digit numbers represented the year.
Year/Month
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
January
A-42
A-43
A-44
A-45
A-46
A-47
A-48
A-49
A-50
A-51
February
B-42
B-43
B-44
B-45
B-46
B-47
B-48
B-49
B-50
B-51
March
C-42
C-43
C-44
C-45
C-46
C-47
C-48
C-49
C-50
C-51
April
D-42
D-43
D-44
D-45
D-46
D-47
D-48
D-49
D-50
D-51
May
E-42
E-43
E-44
E-45
E-46
E-47
E-48
E-49
E-50
E-51
June
F-42
F-43
F-44
F-45
F-46
F-47
F-48
F-49
F-50
F-51
July
G-42
G-43
G-44
G-45
G-46
G-47
G-48
G-49
G-50
G-51
August
H-42
H-43
H-44
H-45
H-46
H-47
H-48
H-49
H-50
H-51
September
I-42
I-43
I-44
I-45
I-46
I-47
I-48
I-49
I-50
I-51
October
J-42
J-43
J-44
J-45
J-46
J-47
J-48
J-49
J-50
J-51
November
K-42
K-43
K-44
K-45
K-46
K-47
K-48
K-49
K-50
K-51
December
L-42
L-43
L-44
L-45
L-46
L-47
L-48
L-49
L-50
L-51
Year/Month
1952
1953
January
A-52
A-53
February
B-52
B-53
March
C-52
C-53
April
D-52
D-53
May
E-52
E-53
June
F-52
F-53
July
G-52
G-53
August
H-52
H-53
September
I-52
I-53
October
J-52
J-53
November
K-52
K-53
December
L-52
L-53
1953 to 1981:
Walker China back stamps – A single or double digit number(dash)double digit number code was used. The single or double digit numbers of 1-12 represented the months of January to December and the double digit numbers were a code used for the year. To achieve the year, just add 22 to the number and that would be the year your piece was manufactured.
Year/Month
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
January
1-31
1-32
1-33
1-34
1-35
1-36
1-37
1-38
1-39
1-40
February
2-31
2-32
2-33
2-34
2-35
2-36
2-37
2-38
2-39
2-40
March
3-31
3-32
3-33
3-34
3-35
3-36
3-37
3-38
3-39
3-40
April
4-31
4-32
4-33
4-34
4-35
4-36
4-37
4-38
4-39
4-40
May
5-31
5-32
5-33
5-34
5-35
5-36
5-37
5-38
5-39
5-40
June
6-31
6-32
6-33
6-34
6-35
6-36
6-37
6-38
6-39
6-40
July
7-31
7-32
7-33
7-34
7-35
7-36
7-37
7-38
7-39
7-40
August
8-31
8-32
8-33
8-34
8-35
8-36
8-37
8-38
8-39
8-40
September
9-31
9-32
9-33
9-34
9-35
9-36
9-37
9-38
9-39
9-40
October
10-31
10-32
10-33
10-34
10-35
10-36
10-37
10-38
10-39
10-40
November
11-31
11-32
11-33
11-34
11-35
11-36
11-37
11-38
11-39
11-40
December
12-31
12-32
12-33
12-34
12-35
12-36
12-37
12-38
12-39
12-40
Year/Month
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
January
1-41
1-42
1-43
1-44
1-45
1-46
1-47
1-48
1-49
1-50
February
2-41
2-42
2-43
2-44
2-45
2-46
2-47
2-48
2-49
2-50
March
3-41
3-42
3-43
3-44
3-45
3-46
3-47
3-48
3-49
3-50
April
4-41
4-42
4-43
4-44
4-45
4-46
4-47
4-48
4-49
4-50
May
5-41
5-42
5-43
5-44
5-45
5-46
5-47
5-48
5-49
5-50
June
6-41
6-42
6-43
6-44
6-45
6-46
6-47
6-48
6-49
6-50
July
7-41
7-42
7-43
7-44
7-45
7-46
7-47
7-48
7-49
7-50
August
8-41
8-42
8-43
8-44
8-45
8-46
8-47
8-48
8-49
8-50
September
9-41
9-42
9-43
9-44
9-45
9-46
9-47
9-48
9-49
9-50
October
10-41
10-42
10-43
10-44
10-45
10-46
10-47
10-48
10-49
10-50
November
11-41
11-42
11-43
11-44
11-45
11-46
11-47
11-48
11-49
11-50
December
12-41
12-42
12-43
12-44
12-45
12-46
12-47
12-48
12-49
12-50
Year/Month
1973
1974
1975
1976
1977
1978
1979
1980
1981
January
1-51
1-52
1-53
1-54
1-55
1-56
1-57
1-58
1-59
February
2-51
2-52
2-53
2-54
2-55
2-56
2-57
2-58
2-59
March
3-51
3-52
3-53
3-54
3-55
3-56
3-57
3-58
3-59
April
4-51
4-52
4-53
4-54
4-55
4-56
4-57
4-58
4-59
May
5-51
5-52
5-53
5-54
5-55
5-56
5-57
5-58
5-59
June
6-51
6-52
6-53
6-54
6-55
6-56
6-57
6-58
6-59
July
7-51
7-52
7-53
7-54
7-55
7-56
7-57
7-58
7-59
August
8-51
8-52
8-53
8-54
8-55
8-56
8-57
8-58
8-59
September
9-51
9-52
9-53
9-54
9-55
9-56
9-57
9-58
9-59
October
10-51
10-52
10-53
10-54
10-55
10-56
10-57
10-58
10-59
November
11-51
11-52
11-53
11-54
11-55
11-56
11-57
11-58
11-59
December
12-51
12-52
12-53
12-54
12-55
12-56
12-57
12-58
12-59

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