Details
An Ardente patent deaf aid,
by R.H. Dent, 309 Oxford St., London W1, in fitted leatherette case, and another deaf aid by the same maker with microphone and ear-piece, in fitted case
See Illustration (2)
by R.H. Dent, 309 Oxford St., London W1, in fitted leatherette case, and another deaf aid by the same maker with microphone and ear-piece, in fitted case
See Illustration (2)