
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1785
1787
hallmarked 1788
1785-1790
1784
1784
1786
1787
1790
1790
1790
1790
1785
1785
1785-1789
2000-100 BCE
1790
1785
1990-96
1787
1705-1737
1788
1784
1785
1785
1787
1784
1784
1784
1790
1772 (original); 1919 (model)
1785
4000-2001 BCE
1642-1649 (original); 1883 (model)
1990-95
1668; 1924
1976; 1776
1610; 1923
300 BCE; 1905-1915
1929 (copy); 1702-1714 (original)
1788 - 1853
1784
1936
1730; 1967
1910-130
1965-195
circa 2000 BCE
700-100 BCE; 1930-1950
1950-159