McVitie Weston valve collection, RCA Radiotron valve, type 807
- Made:
- 1937
- maker:
- RCA Corporation
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RCA Radiotron valve, type 807, pinch marked X27, ceramic 5-pin base, top anode cap, (RMW/J144 - McVitie Weston number), by RCA Corporation, 1937.
