![](https://coimages.sciencemuseumgroup.org.uk/250/99/large_thumbnail_2016_0497__0001_.jpg)
horological rubber
1850-1900
1850-1900
1701-1900
1821-1850
1701-1900
1890-1910
1771-1830
1771-1830
1771-1830
1864-1900
1740-1753
circa 1861
1700-1720
1862
after 1903
1850-1859
1735-1752
1701-1752
1750-1795
1700-1752
1915
1895
1849
1855
1794
1870
circa 1900
1878
circa 1840
1912
circa 1900
1903
1902
1801-1900
1742
1701-1800
1827-1850
1790-1840
1700-1800
circa 1880
1900
1860
1846-1859
1842
1850
1901
circa 1885
1819-1905
1895
1896
1842