horological rubber
1850-1900
1850-1900
1855
2012-2018
2012-2018
2014
2022
1750-1770
1948
1870-1900
1833-1880
1960
2012-2018
2012-2018
2012-2018
Unknown
1926
1950-1975
1899
1844
1887
before 1889
1886
before 1889
before 1889
not Known
not known
1901-1950
Unknown
Unknown
1813-1837
1825-1900
1751-1850
1841-1859
1813-1837
1701-1900