
Watch with faceted oval rock crystal case and protective outer case by John Ramsay
1625
1625
1630-1642
1630-1653
1636
1623
1630
1640
1630
1630
1630
1650
1650
1625
1625
1640
1640
1630
1630
1630
1625
1630
1632-1640
2000-100 BCE
1990-96
1636
1640
1630
1650
1650
1650
1625
1650
1622-1628
1640
1650
1625-1635
1630
1625
1654
4000-2001 BCE
1642-1649 (original); 1883 (model)
1990-95
1610; 1923
1634 (print); 1581-1587 (observatory)
300 BCE; 1905-1915
1647
1936
1910-130
1965-195
circa 2000 BCE