An elaborately-engraved silver-plated  F.C.Rein & Son London Dome Hearing Aid. English, ca. 1865, engraved: 'F. C. Rein & Son Patentees, sole inventors, & only makers, 108 Strand, London.', ca. 20 cm, with ivory earpiece.

A nickel-plated brass Hawksley-Type сompact ear trumpet hearing aid, with telescopic earpiece-tube and decorative grille. Length 13,5cm. England, c.1880.

Hearing tube with a parabolic bell, brass. Bell-shaped sound collector (London Dome type) with a U-shaped hearing tube that originates from the bottom of the bell and exits from the side, curving back upward in a U-shape (“swan-shaped”). Decorative floral grill. No manufacturer’s markings. England, ca. 1880.