Category: Stethoscope
Estimated Date: 1870
Name: Stethoscope, Cammann, with Steel Spiral Wire Tension Spring
Manufacturer: Schlottenbeck and Co.

Description: 8× 4.5× 1.5 box with picture of stethoscope and label as above and factory but no mnfr name. Contains stethoscope, not original but of type pictured. Stethoscope has 3 long by 1 5/8 hard rubber bell, woven tubing, ivory ear pieces and spring to adjust earpiece tension instead of rubber band, stamped Dr. Cammanns improved stethoscope.

Reference 1: 57