# 1501 (1973) Transistors / Circuit Board - PB, UR #34268, MNH

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US 1973

TRANSISTORS and PRINTED CIRCUIT BOARD

Electronics Progress Issue

Developed in the year 1947 by three American physicists, the transistor is considered as one of the most important inventions in the history of science.
Water Activated Gum
Scott 1501
Perforated 11
Upper Right Stamp Plate Block - #34268

Mint Never Hinged