![](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
circa 1840
1838
1934
1835
1835
1837
1837
1836
1837
1837
1840
1837
1837
1838
1839
1837
1839
1955; 1830
1840
1835
1837
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1839
1840
1930 (replica); 1834 (original)
1838
1986 (replica); 1501-1600 (original)
1839-1840
1837
1838
1840
1835-1840
1835
1840
1705-1737
1870-1877
1837-1840
1839
1830 (original); 1967 (model)
1839
1838
1990-96
4000-2001 BCE
1839
1888-185