McVitie Weston valve collection, RCA Radiotron valve, type UX 201-A
- maker:
- RCA Corporation
RCA Radiotron valve, type UX 201-A, (RMW/Y35B - McVitie Weston number), by RCA Corporation.
RCA Radiotron valve, type UX 201-A, (RMW/Y35B - McVitie Weston number), by RCA Corporation.