horological rubber
1850-1900
1850-1900
1857-1870
1835
1861-1866
1864-1900
circa 1861
1862
1850-1859
1895
1849
1855
1870
circa 1900
1878
circa 1840
circa 1900
1850-1900
circa 1880
1900
1875
1884
1860
1846-1859
1842
1850
circa 1885
1895
1896
1842
1837
1834
1834
1834
1898
1845-1855
1840-1850
1847
1842
1845
1845
1837
1886
1858
1896
1858-03-02
1865-1866
1860-1900
1854
1851-1900
1858