Reason slot meter, c.1920.
1918-1922
1918-1922
1918
1920
1917
1924
1925
1925
1925
1922
1923
1924
1922-1923
1922-1923
1922-1923
1922-1923
1919
circa 1920
1920-1925
1917
1921
2000-100 BCE
1917-1918
1924
1923
1934
1923
circa 1920
1920
1955; 1830
1918-1920
1918
1921
1918
1918
1920-1925
1920
1920
1925
1990-96
1920
1924
1920
1930 (replica); 1834 (original)
1919
1923
1923
1922-1923
1922-1923
1922-1923
1922-1923