![](https://coimages.sciencemuseumgroup.org.uk/250/99/large_thumbnail_2016_0497__0001_.jpg)
horological rubber
1850-1900
1850-1900
1914-1918
1890-1910
1864-1900
circa 1861
1862
after 1903
1918-1922
1850-1859
1915
1895
1849
1855
1918
1870
1914-1920
circa 1900
1878
circa 1840
1912
circa 1900
1903
1902
1913-1923
1850-1900
circa 1880
1900
1920
1875
1884
1860
1917
1924
1846-1859
1842
1850
1901
circa 1885
1895
1896
1842
1837
1906
1902
1831-1870
1910
1834
1834
1834
1898