Physical description

Black box with "Sonotone" on lid with red felt & cream linings, containing two hearing aids: one silver hearing aid with black back using AA batteries with clip, Polyfon "popular" transistor (Body) hearing aid, and one silver hearing aid using 2 batteries: H.T & L.T. batteries with clip: Foriphone Model 40 Hybrid hearing aid. No ear pieces. Probably the 'old' hearing aids put in the 'new' hearing aid box.

Inscriptions & markings

Box "Sonotone" on lid of box. Hearing aid 1. "POLYFON' in blue on bottom edge "POPULAR/SER NO 22155" on battery compartment. Hearing aid 2. Inside battery compartment "MODEL 4.0 / TRANSISTOR / FORTIPHONE / ENGLAND / PAT 634202 / 175026". Instructions re: batteries. 30V H.T battery and L.T. battery