1950
1951
1948
1947
circa 1950
1946
1950-1952
1955; 1830
1946-1950
1950-1951
1946-1948
2000-100 BCE
1938 and 1951
1949
1990-96
1986 (replica); 1501-1600 (original)
circa 1947
1830 (original); 1967 (model)
1801-1892 (prepared); 1946 (element replaced)