Summary

Two photocells in original cartons: Cintel, Type GS47, 1940 - 1950 and Photocell - Ampro, Part No. 3377, circa 1940.

Physical Description

Tubular glass bulbs on three pin miniature bakelite base. Each with curved cathode with gold coloured internal surface. Valves are contained in rectangular buff coloured cardboard boxes.

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