United States, 15 Cents, Microphone, Tubes


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Country United States
Year 1973
Name United States, 15 Cents, Microphone, Tubes
Denomination 15 Cents
Type of Issue: Definitive
Theme Science
Color gray-green, multicol
Printing Method lithographed, engraved (Giori press)
Printed by: Bureau of Engraving and Printing, Washington DC
Perforation type: Perforated
Tagging Tagged
Description Electronics Progress - Microphone, Tubes, Speaker