
Cammann type binaural stethoscope
1845-1855
1845-1855
1970-1975
1920-1935
1915
1878-1900
1880-1900
1944
1946
1946
circa 1973
circa 1973
circa 1910
1969
1969
1949
13 May 1961
1891-1910
1880-1893
2020
1934
1917
1860-1890
1910-1930
1900-1930
c. 2020
1945-1970
2009
1865-1875
1904-1910
1922-1927
1973
1889
1890-1910
1851-1900
1880-1920
1900-1980
1945-1970
1900-1930
1890-1910
1847-1860