Pairs were issued from 1911 until 1943, with singles from the 1944 decal until 1949 when in 1950 the pairs resumed. 1911 pairs are considered the most scarce.
1908-1910
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1911 (early)
1911
1912
1913
1914
1915
1916
1917a
1917b
1918
1919a
1919b
1920
1921a
1921b
1921c
1922a
1922b
1922c
1923a
1923b
1923c
1924
1925a
1925b
1926a
1926b
1927
1928
1929
1930
1931
1931a
1931b
1932
1933
1933a
1933b
1934a
1934b
1934c
1935a
1935b
1936
1937a
1937b
1938
1939
1940
1941
1942
1943
1944 instructions
1944
1945
1946
1947
1948-49undated
1948
1949
1950
1951
1952
1908-1910
.jpg "Click To Enlarge")
1911 (early)
1911
1912
1913
1914
1915
1916
1917a
1917b
1918
1919a
1919b
1920
1921a
1921b
1921c
1922a
1922b
1922c
1923a
1923b
1923c
1924
1925a
1925b
1926a
1926b
1927
1928
1929
1930
1931
1931a
1931b
1932
1933
1933a
1933b
1934a
1934b
1934c
1935a
1935b
1936
1937a
1937b
1938
1939
1940
1941
1942
1943
1944 instructions
1944
1945
1946
1947
1948-49undated
1948
1949
1950
1951
1952