1901
circa 1900
1934
1903
circa 1905
after 1903
1900
1905
1904
1955; 1830
1872 (original); 1909 (model)
2000-100 BCE
1902
1990-96
1772 (original); 1919 (model)
4000-2001 BCE
1801-1892 (prepared); 1946 (element replaced)
1903 (original); 1982 (model)
1901-1905