Ear Trumpet, An Otophone

American, c.1900, in black vulcanite, ear trumpet with diaphragm, signed E.B. Meyrowitz, no. 1733, with diaphragm cover with trade label, in original fabric covered card case, with external and internal labels to lid, case 9.2cm high; with speaker or loudhailer, incomplete, by the Globe Ear-Phone Company, Boston U.S.A., 13.4cm across