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