
Liquid-filled Plastic Lens Television Magnifier, 1935-1965
1935-1965
1935-1965
1946
1996-1998
1959
1976-1982
1918-1920
1948-1953
1955
1915-1918
1996
1979
1969
1999
1995-1999
1990-1997
1999
1911
1930-1931
1957
1938-1940
1945
circa 1920
1914-1916
1948-1950
1839 (original); circa 1988 (replica)
1936
1949
1935
1960
1970-1971
1960-1970
1705-1737
1990-2000
1945-1955
1988-2000
1996
1925-1935
1991-2000
1920-1950
c.1912
1915
1830 (original); 1967 (model)
1903 (original); 1982 (model)
1960
1999
1998
1999
1980-1985
1970-1981
1930-1960