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A SELECTION OF EARLY TRANSISTORS AND MINIATURE VALVES, 1950's
A Selection of Transistors and miniature valves, also a mercury wetted relay with box.
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There is a glass microscope slide showing the parts of a Germanium Transistor, a sectioned point contact diode showing the cats whisker, a U25 Extra high voltage rectifier used in Televisions, a Neon number indicator made by Mullard, and a solid state infra red detector.
Also are various early, and not so early transistors.