More information on Modip Bournemouth
Trumpet style hearing aid - PHSL : 348
An ear trumpet-style hearing aid with a simple tube-shaped body bent 90 degrees and funnel ends, made of thermoformed cellulose nitrate with a tortoiseshell colouring, circa 1930s.
Length: 165mm Diameter: 75mm
images & text courtesy MODIP

Ear Trumpets, the Packington Collection
SY10, Shropshire, UK