
Silver astronomical watch by Nathaniel Barrow
1660
1660
1660
2000-100 BCE
1990-96
4000-2001 BCE
1660
1660
1936
8500-2000 BCE
1960-1979
300 BCE; 1905-1915
circa 3000 BCE
2000 BCE
2000-500 BCE
8500-2000 BCE
1991-1786 BCE
1991-1786 BCE
2000-500 BCE
1501-1600; 1978
1800-1600
30 CE
1660
30 CE
2686-2613 BCE
1888-185
1945-50
1642-1649 (original); 1883 (model)
2000-100 BCE
2000 BCE
1913; circa 900 CE
1935-1958 (reproduction); 1055-1064 CE (original)
3000-2500 BCE
2000-500 BCE
2000-500 BCE
1900-1933
400 BCE-100 CE; 1900-1936
100 BCE-100 CE; 1900-1936
100 BCE-100 CE; 1900-1936
1664-1660
1940-1050
30-300
2050-1750 BCE
10,000-2,000 BCE
1977; 1204-1206
10000-500 BCE
2500 BCE
1801-190
1660
2000-100 BCE
2000-1001 BCE