![](https://coimages.sciencemuseumgroup.org.uk/250/99/large_thumbnail_2016_0497__0001_.jpg)
horological rubber
1850-1900
1850-1900
1821-1850
1890-1910
1771-1830
1771-1830
1771-1830
1864-1900
circa 1861
1862
after 1903
1850-1859
1750-1795
1895
1849
1855
1794
1870
circa 1900
1878
circa 1840
circa 1900
1903
1902
1801-1900
1827-1850
1790-1840
circa 1880
1900
1860
1846-1859
1842
1850
1901
circa 1885
1819-1905
1895
1896
1842
1790-1819
1790-1819
1790-1819
1760-1770
1790-1819
1790-1819
1827
1837
1902
1831-1870
1910
1834