
Sample of gutta percha insulated cable, 1863-7
1863-7
1863-7
1893-4
2000-100 BCE
1705-1737
1823
4000-2001 BCE
1822
1668; 1924
1990-95
1610; 1923
1642-1649 (original); 1883 (model)
1823
1936
1846-08
circa 3000 BCE
1824
1824
1823
1822
1823
100 BCE-300 CE; 1890-1920
2000-1350
1823
1972-3
2000-1000
1851-1800
1901-950
1823
1822
15/7/27
1822
15/7/27
1840-160
circa 3000 BCE
3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
1823
1824
1822
1822
1822
1824
1823
1822
1822