A museum quality boxed Knight’s binaural stethoscope by Coddman and Shurtleff. This is very similar to the ‘Cammann’ stethoscope but has a modified spring mechanism which opposed the ear pieces.
The spring mechanism is marked “Codman & Shurtleff Boston”. There are three detachable bells. The chest and connecting pieces are made from gutta-percha. The stethoscope is in excellent condition throughout and has been well protected in its wooden box where it has been supported on an old gutta-percha pessary. The box has been repainted in black and carries the name of a previous owner. J W Dunn Lamar Ma.