
Reason slot meter, c.1920.
1918-1922
1918-1922
1915
1918
1917
1915
1919
1918
1915
1922-1923
1922-1923
1922-1923
1922-1923
circa 1920
1934
1915
1923
1920
1922
1923
1917
1915
1916
1918-1920
1921
2000-100 BCE
1917-1918
1923
1915
circa 1920
1920
1955; 1830
1915-1917
1918
1921
1918
1915-1918
1916-1917
1920
1920
1990-96
1920
1930 (replica); 1834 (original)
1923
1922-1923
1916-1918
circa 1920
1922-1923
1922-1923
1922-1923
1922-1923