Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
1705-1737
1762
1761
1763
1752
1761-1762
1755-1765
1760-1775
1762
1752
1765
1762
1780
1772 (original); 1919 (model)
4000-2001 BCE
1760-1772
1769
1775
1760-1775 probable date
1761
1761
1758-1769
1772-1773
1758-1769
1758-1773
1750-1774
before 1753
1752
1752
1751
1752
1776
1778-1780
1752
1755
1760
1753-1754
1771-1780
1762
1752
1753
1754
1780
1762
1770-1780
1750-1770
30
1769
1776
1777