Bauscher China Date Codes

Some china is marked with a two digit or 4 digit year code. China marked with other characters such as (dashes) or (asterisks) may or may not be a date code but it is unknown at this time.

Two digit code examples:
Year/Month
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
January-December
00
01
02
03
04
05
06
07
08
09
Year/Month
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
January-December
10
11
12
13
14
15
16
17
18
19
Year/Month
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
January-December
20
21
22
23
24
25
26
27
28
29
Year/Month
1930
1931
1932
1933
1934
1935
1936
1936
1937
1939
January-December
30
31
32
33
34
35
36
37
38
39
Year/Month
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
January-December
40
41
42
43
44
45
46
47
48
49
Year/Month
1950
1951
1952
1953
1954
1955
1956
1957 & Continued
January-December
50
51
52
53
54
55
56
Same pattern continued
 

Four digit code examples:

Year/Month
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
January-December
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
Year/Month
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
January-December
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
Year/Month
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
January-December
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
Year/Month
1930
1931
1932
1933
1934
1935
1936
1936
1937
1939
January-December
1930
1931
1932
1933
1934
1935
1937
1937
1938
1939
Year/Month
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
January-December
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
Year/Month
1950
1951
1952
1953
1954
1955
1956
1957 & Continued
January-December
1950
1951
1952
1953
1954
1955
1956
Same pattern continued

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