Stethoscope, Littmann Master Classic, Gold Edition, 24 karat gold plated, black tubing and imprinted with "Littman Quality" on diaphragm, Littmann, 3M Healthcare, United States of America , 1901-2000 Littmann Master Classic Gold Edition Stethoscope Clinical Diagnosis 1901-2000
Allison's differential binaural stethoscope with interchangeable chest pieces Clinical Diagnosis 1851-1910
Sprague Bowles stethoscope with matt-finish bridge spring. Supplied by Scala Impex, London. ("Headframe, Japan; chestpiece, Pakistan; rubber tubing, England") . Late 20th Century. Sprague Bowles stethoscope with matt-finish bridge spring. Supplied by Scala Impex Clinical Diagnosis 1901-2000