Reason slot meter, c.1920.
1918-1922
1918-1922
1927
circa 1930
1918
1920-1929
1932
1920
1930
1917
1924
1925
1928
1927
1923
1924
1931
circa 1920
1930
1931
1934
1925
1927
1926
1934
1922
1920-1925
1917
circa 1927
circa 1930
1922-1923
1922-1923
1922-1923
1922-1923
1921-1930
1926
1921
1926
2000-100 BCE
1920-1928
1925
1921-1926
1934
1917-1918
1924
1927
1934
1923
1920-1929
1920-1930
1921-1931