![](https://coimages.sciencemuseumgroup.org.uk/47/175/large_thumbnail_1970_0492__0001_.jpg)
Sample of gutta percha insulated cable, 1863-7
1863-7
1863-7
2000-100 BCE
1893-4
1955; 1830
1833
1705-1737
1772 (original); 1919 (model)
1775-1799 (original); 1900-1907 (model)
1833
1986 (replica); 1501-1600 (original)
1870-1877
4000-2001 BCE
1830 (original); 1967 (model)
1990-96
1888-185
1833
1833
1890-1810
1833
1833
1833
1860-1820
1871-1830
1860-1715
1991-1783 BCE
1833
1833
1833
1833
1833
1833
1833
1833
1833
1676; 1840-1865
1833
1833
2000-1350
1833
1833
1883-01
1972-3
1870-1800
1945-50
3000 BCE
1990-95
1864-05
1774; 1923
1865-05
1864-10