1977
2000-100 BCE
(1962); 1982
1990-96
1986 (replica); 1501-1600 (original)
1903 (original); 1982 (model)
4000-2001 BCE
1970 and post 1989
15/7/27
2000-500
2686-2613 BCE
1930 (original); 1984 (model)
circa 3000 BCE
2000-800
2000-1000
5000-500 BCE
10000-5000 BCE
20-400
1990-95