![](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
1813
1893-4
1812
1811-1812
1772 (original); 1919 (model)
1775-1799 (original); 1900-1907 (model)
1986 (replica); 1501-1600 (original)
1705-1737
1990-96
1813
4000-2001 BCE
1888-185
1812
1812
1811
2000-1350
1883-01
1811
1972-3
1870-1800
1812-1813
1945-50
3000 BCE
1990-95
1864-05
1865-05
1864-10
1867-04
1864-04
1867-04
1870-10
1812
1813
1813
1811
1811
1812
30 CE
30 CE
1795-1805
2000-100 BCE
1066; 1876
3000-1500
1900-1933
1811
4000-30 BCE
3500-1000
1812