
Sectioned induction coil
1874
1874
1898
1900
1981
1900-1910
1840-1857
1881
1968
1920-1940
1950-1959
1910
1898
1925-1950
1916
1870
1953
1890
1902
1900-1980
1879
1890-1900
1926-1954
1876
circa 1905
1907
1903-1929
1901-1920
1851-1877
1920-1925