Cammann type binaural stethoscope
1845-1855
1845-1855
1925-1945
2020
2020-2021
1870-1910
1920-1950
1916
1866-1900
1999
1851-1920
1910-1945
1900-1940
1940 -1950
1920-1950
1860-1920
1880-1920
1940-1965
1941-1950
1800-1870
1920-1950
1874-1920
1890-1940
1920-1950
1920-1950
1880-1930
1880-1930
1880-1930
Unknown
1851-1910
1851-1910
1851-1910
1920-1950
1851-1910
1851-1910
1851-1910
1836-1930
1889
1891-1920
1991
circa 2020
circa 2020
1974-1990
1860-1920
1880-1930
1999
1880-1920
1915
1915-1918
1880-1920