1950
2000-100 BCE
1951
circa 1950
1938 and 1951
1949
1955; 1830
1950-1952
1950-1951
1990-96
1986 (replica); 1501-1600 (original)
1903 (original); 1982 (model)
4000-2001 BCE
1830 (original); 1967 (model)
1952-08-29
1951-08-26
1951-08-24
1950-08-30
1951-04
1951-07-02
1952-03-21
1951-06-07