Sample of gutta percha insulated cable, 1863-7
1863-7
1863-7
1855
2000-100 BCE
1893-4
1855
1934
1855
1955; 1830
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1855
1930 (replica); 1834 (original)
1855
1986 (replica); 1501-1600 (original)
1934
1705-1737
1870-1877
1855
1855
1830 (original); 1967 (model)
1855
1990-96
4000-2001 BCE
1888-185
1860-1820
1871-1830
1855
circa 1855
1855
1855
1855
1855
1832-1850
1855
1855
2000-1350
1883-01
1855
1972-3
1870-1800
1855
1945-50
3000 BCE
1990-95
1864-05
1865-05
1864-10
1867-04
1864-04