Early balance spring watch by Thomas Tompion
1675-1679
1675-1679
1990-96
1668-1672 Probable
1663
1666-1680
1663
1665-1666
1675
1680
1675
1670-1680
1680
1680
1680
1670
1675
1670
1670
1860-1920
1610; 1923
1672
1673
1666-1667
1670
2000-100 BCE
1680
1665-1670
1667
1666
1666
4000-2001 BCE
1681
1671
1990-95
1910-1921
1677
1670-1675
1-79 CE; before 1914
1674
1884
1860-1920; 500-401 BCE
1680
1674
1677
1-79 CE; before 1914
1860-1920; 500-401 BCE
1679
1931; 250 BCE
1669
circa 3000 BCE