McVitie Weston valve collection
- Made:
- United States and Canada
- maker:
- RCA Corporation and
- E T Cunningham, Inc
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RCA general-purpose triode valve, Radiotron type 27, USS5 base, marked F615 pinch marked 011, (RMW/F66 - McVitie Weston number), by RCA Corporation and E.T. Cunningham.
