USA: International Callophone Corporation, preference and common shares, 1920 - Image 1
USA: International Callophone Corporation, preference and common shares, 1920 - Image 2

USA: International Callophone Corporation, preference and common shares, 1920

£30.00

Description

USA: International Callophone Corporation, pair of certificates for preference and common shares, both 1920, green and brown respectively, GVF.

Callophone Radio Products: Headsets, Loud Speakers, Phonograph Attachments. Held numerous patents within this field of technology.

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