McVitie Weston valve collection, SFR horned valve, type E604
- Made:
- 1936
SFR horned valve, type E604, pinch marked 28 and 1101/1, filament broken, (RMW/Y366 - McVitie Weston number), by Societe Francaise Radioelectrique, 1936.
SFR horned valve, type E604, pinch marked 28 and 1101/1, filament broken, (RMW/Y366 - McVitie Weston number), by Societe Francaise Radioelectrique, 1936.