Ring transformer, 1892
1892
1892
1934
2000-100 BCE
1893-4
1872 (original); 1909 (model)
1955; 1830
1892
1990-96
1893
1893
1930 (replica); 1834 (original)
1801-1840 (original); 1901 (model)
1705-1737
1772 (original); 1919 (model)
4000-2001 BCE
1934
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1775-1799 (original); 1900-1907 (model)
1830 (original); 1967 (model)
1892
circa 1893
1893
1893
1892
1825; 1910
1893
1893
1893
1892-1893
1893
1970-1875
30 CE
30 CE
1893
2686-2613 BCE
1859; 1986
1893
1945-50
1893
1892
1893
1370-1350 BCE; 1931
1931; 250 BCE
1370-1350 BCE; 1931
1892
2000-1000
1972-3
2500 BCE
1990-95