Cammann type binaural stethoscope
1845-1855
1845-1855
1889
1970
1925-1945
1866-1900
1991
Unknown
1920-1950
1940 -1950
1914-1918
Unknown
1891-1920
1920-1950
Unknown
2020-2021
1920-1950
1941-1950
1800-1870
1920-1950
Unknown
1880-1930
1920-1950
1900-1940
2020
1880-1920
1860-1920
1920-1950
circa 2020
1880-1930
1880-1920
1999
1874-1920
1851-1910
1890-1940
1880-1930
1851-1910
1920-1950
circa 2020
1880-1930
1880-1920
1890-1940
1836-1930
1940-1965
1860-1920
2020
1910-1945
1801-1900
1880-1910