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Category
Audiology
2
Object type
hearing (aids)
2
hearing aids
2
bonochord
1
ear trumpets
1
electrical
1
Place
England
1
Material
headband, steel
2
case, leatherette, brown
1
earpiece, bone
1
earpiece, brass
1
headband appendage, plastic
1
headband, plastic
1
power unit, plastic
1
trumpet, plastic, imitation tortoiseshell
1
Date
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Bonochord, battery, hearing aid, cased, English, 1940-1969
Bonochord, battery, hearing aid, cased, English, 1
Audiology
1940-1969
Double ear trumpet with headband
Double ear trumpet with headband
Audiology
1780-1928
