# 1502 (1973) Transistors / Circuit Board - Mr. Zip, BK/4, UR, MNH

Regular price $0.75 Sale

US 1973

VACUUM TUBE and TV CAMERA TUBE

Electronics Progress Issue

The simplest vacuum tube, the diode, was invented in 1904 by John Ambrose Fleming.
Water Activated Gum
Scott 1502
Perforated 11
Upper Right Stamp Mr. Zip Block of 4

Mint Never Hinged

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