Loewe valve, type WG33, black painted opaque envelope with valve holder, (RMW/H12 - McVitie Weston number), by Loewe Radio S.A., 1937.
Loewe valve, type WG33, black painted opaque envelope with valve holder, (RMW/H12 - McVitie Weston number), by Loewe Radio S.A., 1937.