American. C.1900.. Rare. User receives a good "jolt" when machine is operated. Detroit Medical Battery Co. "MANUFACTURED BY DETROIT MEDICAL BATTERY CO. 26 FORT ST. WEST DETROIT.-MICH PATENTS PENDING". 14" x 18" x 11". Very Good. Complete and functioning. Surface of case exhibits areas of mild surface oxidation. Surface oxidation also surrounds the perimeter of the scarce original tin sign. Coin escutcheon a later replacement. Key included. 3000-4000. CODE-COOP