
Compound Microscope by Carl Zeiss, Jena, German, 1870-1888
1870-1888
1870-1888
1970
1890-1900
1941-1960
1900-1950
1910-1920
1895-1900
1905-1915
circa 1930
circa 1922
1900
1871-1900
circa 1912
1910-1940
1905-1915
1900-1945
1925-1935
1891-1910
1900-1940
1980-1987
1901-1920
1895-1899
1950-1965
1930-1950
1901-1945
1880-1900
1939-1945
1970
1967
1976
1940
1920-1930
1926-1929
1920-1950
circa 1948
circa 1930
1910-1920
1900-1940
1871-1900
1970
1866-1889
1965
1890-1910
1937-1945
1925-1929