BTH horn loudspeaker, type C2, c. 1925

BTH horn loudspeaker, type C2, 1925

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BTH horn loudspeaker, type C2, 1925
Science Museum Group Collection
© The Board of Trustees of the Science Museum

BTH horn loudspeaker, type C2, c. 1925

Details

Category:
Radio Communication
Object Number:
1977-890
type:
loudspeaker
credit:
Porter, E.G.