![](https://coimages.sciencemuseumgroup.org.uk/250/99/large_thumbnail_2016_0497__0001_.jpg)
horological rubber
1850-1900
1850-1900
1864-1900
circa 1861
1862
1850-1859
1895
1849
1855
1870
circa 1900
1878
circa 1840
circa 1900
circa 1880
1900
1860
1846-1859
1842
1850
circa 1885
1895
1896
1842
1837
1834
1834
1834
1898
1840-1850
1847
1842
1845
1837
1886
1860-1900
1854
1851-1900
1858
1875
1885
1848
1858
1870-1880
1898
1851
1857-1858
1865
1857-1858
1857-1858
1835-1870