
Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
1770
1862-1863
1915-1917
1950-1951
1837
1894-1904
1900-1910
1844
1790
1801-1900
1841
2005
1951
1925-1930
1856
1630
1724
1666-1680
1944
1890-1900
1901-2000
1860-1870
1870-1910
1820-1860
1751-1800
1770-1830
1871-1900
1801-1900
1801-1870
1915-1925
1750-1837
1750-1800
1750-1900
1801-1900
1856-1900
1880-1920
1910-1920
1901
1900
1894
1876
1902-1903
1862
1927
1927