McVitie Weston valve collection, RCA Radiotron valve, type UY227
- maker:
- RCA Corporation
RCA Radiotron valve, type UY227, marked J11213, (RMW/F65 - McVitie Weston number), by RCA Corporation.
RCA Radiotron valve, type UY227, marked J11213, (RMW/F65 - McVitie Weston number), by RCA Corporation.