
Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
1770
1783-1800
1799-1802
1777-1785
1760-1775
1775
1801
1066; 1876
1751-1800
1788
1752
1762
1798
1755
1756-1800
1797
1893-4
1805
1800
1780
1770-1800
1760-1790
1795
circa 1808
1775-1799
1785-1795
2000-100 BCE
1771-1800
1778
1783
1793-1803
1776-1780
1776-1780
1776-1780
1808
1642-1649 (original); 1883 (model)
1794
circa 1805
1782-1793
1762
1762
1752
1761
1762
1761
1762
1762
1762
1770-1780
1760