1921
1934
1925
1924
1923
2000-100 BCE
1918
1920
1918-1922
circa 1920
1920-1925
1919
1918-1920
1922-1923
1922
1955; 1830
1917-1918
1917
4000-2001 BCE
1903 (original); 1982 (model)
1922-1924
circa 1919
1772 (original); 1919 (model)
1920-1922