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A true mirror of sound : Bettini micro-phonograph, micro-diaphragms for phonograph and graphophone, Bettini celebrated "opera musical records" and autograph-records of world famous artists (1900)

Bettini Phonograph Laboratory · New York : Bettini Phonograph Laboratory · leaf 10

An illustration from A true mirror of sound : Bettini micro-phonograph, micro-diaphragms for phonograph and graphophone, Bettini celebrated "opera musical records" and autograph-records of world famous artists, 1900, leaf 10
BETTINI MICRO-REPRODUCERS FOR COLUMBIA GRAPHOPHONES. … BETTINI MICRO-REPRODUCER (Nf). For Columbia Home Grand (Type H G) and Columbia Grand.$ 18.00 REPRODUCING HORNS. No. 1, in Tin with Aluminum Bell.$ 3.00 No. 3, in Brass, 30 inches long (stand required). 8.00 No. 4, in Brass, 48 inches long (stand required).15.00 COMPLETE OUTFIT WITH COLUMBIA GRAND.…

Trade catalogs · Sound recordings · Phonograph · Bettini Phonograph Laboratory

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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