
Chinese celestial clockwork globe
1830
1830
1775-1799 (original); 1900-1907 (model)
1821
1829
1830
1825
1826
1893-4
1863-7
1829
2000-100 BCE
1829
1826
1831
1821
1831
1821-1831
1955; 1830
1826
1990-96
1830
1831
circa 1821-1825
1772 (original); 1919 (model)
1824
1823-1825
1829
1822
1829
1829
1705-1737
1826
4000-2001 BCE
1821
1829
1828
1870-1877
1823
1825
1823-1825
1826
1821
1830 (original); 1967 (model)
1821
1823
1824
1830
1826
1831
1668; 1924