
Lever escapement watch by Josiah Emery
1792
1792
1795
1795
1755
1739
1800
1740-1749
1750-1760
1897
circa 1808
1750-1799
1790
1807
1814
1767
1840
1802
1795
1795
1775-1799
1765-1775
1849
1750
1775-1800
1816
1790
1792
1880
1785-1795
1792
1790
1785-1795
1850-1900
1781-1790
1799-1802
1825
1862
1770-1900
1848
1858
1830-1850
1837
1886
1875
1898
1864-1900
1815-1825
1850-1899
1760-1870
1771-1860