Electric light adapter only, for Brunton's auriscope, with wooden case, likely English, 1901-1920 Electric light adapter
Body-worn hearing aid, model S1694, received by Help the Aged for their Hearing Aid Appeal, manufactured by Philips, the Netherlands, 1975-1985 Body-worn hearing aid
Behind ear hearing aid, model 580 PC, received by Help the Aged for their Hearing Aid Appeal. Manufactured by Oticon International A/S, Denmark, 1980-1990 Behind ear hearing aid