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1333.005

ACOUSTIC HEARING AID, SILVER ENGRAVED SPEAKING TUBE/ MEGAPHONE, CONICAL SHAPE WITH FUNNEL EAR PIECE LARGE SIZE

Inscription
F.C. Rein & Son. Patentees Sole Inventors & Only Makers 108 Strand London
Production date
1870
Production organisations
F.C. REIN

Part 1333.005

Classification:
2011: Hearing aids, hearing aid test machines
Location:
In Storage