McVitie Weston valve collection
- Made:
- 1934-1961
Brimar half-wave rectifier miniature valve, type R18, B9A base, marked 3G4, (RMW/Y289 - McVitie Weston number), by Standard Telephones and Cables Limited, 1934-1961.
Brimar half-wave rectifier miniature valve, type R18, B9A base, marked 3G4, (RMW/Y289 - McVitie Weston number), by Standard Telephones and Cables Limited, 1934-1961.