Reason slot meter, c.1920.
1918-1922
1918-1922
1926
1921
1926
1927
circa 1930
1918
1920
1920-1929
1932
1919
1920-1925
circa 1927
circa 1930
1920
1930
1924
1925
1928
1922
1927
1923
1924
1925
1921-1926
1924-1927
1922-1923
1922-1923
1922-1923
1922-1923
1920-1929
1920-1930
1927
1923
1931
circa 1920
1930
1934
1931
1918
1928
1926
2000-100 BCE
1920-1928
1924
1921-1931
circa 1920
1930-1931
1955; 1830
1918-1920