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A loudspeaker (electromagnetic loudspeaker), 1930s model
Kalinin Plant, Leningrad, USSR
1936
Metal, paper
Factory production
430x400x190 mm
Inv. No. V-B-229-i
Kalinin Plant, Leningrad, USSR
1936
Metal, paper
Factory production
430x400x190 mm
Inv. No. V-B-229-i
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