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Category
Audiology
1
Object type
duchess
1
electrical
1
hearing (aids)
1
hearing aids
1
Material
case, metal
1
covering, velvet, brown
1
earpiece extension, acrylic
1
earpiece extension, polythene
1
earpiece, aluminium, anodised
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earpiece, plastic
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lining, fabric
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lining, velvet, green
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power unit, brass
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power unit, plastic, grey
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"Duchess" electrical hearing aid, cased, English, 1950-1970
"Duchess" electrical hearing aid, cased, English,
Audiology
1950-1970
