
Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
1770
1712-1713
1783-1800
1701-1800
1701-1800
1738-1777
1777-1785
1744-1774
1701-1800
1700
1760-1775
1775
1066; 1876
1751-1800
1788
circa 1750
1745-1755
1752
1762
1750
1701-1752
1750-1795
1798
1755
1701-1752
1700-1752
1735-1752
1756-1800
1745-1755
1745-1755
1735-1754.
1797
1800
1780
1770-1800
1760-1790
1700-1725
1795
1700-1725
1775-1799
1785-1795
2000-100 BCE
1701-1800
1701-1800
1725-1755
1771-1800
1750-1800
1701-1800
1701-1730
1778