'Bell-crank' engine, c. 1799
1795-1805 (original)
1795-1805 (original)
1785
1809
1797-1804
circa 1805
1808
1794
circa 1800
1808
1893-4
1785
1810-1817
1812
1782-1793
1783
1785
1806
1815
1807
2000-100 BCE
1815
1795-1805
1784
1784
1785-1790
1798
1797
1799-1802
1863-7
1782
1787
hallmarked 1788
1815
1799
1795-1810
1802
1805
1796-1797
1796-1798
1790-1810
1813
1785-1789
circa 1810
1807
1781-1790
1793-1803
1790
1809
1990-96
1813