McVitie Weston valve collection, Daven valve, type MU-20
- maker:
- Daven Radio Corporation
Daven valve, type MU-20, red and black printed label, marked 67027, (RMW/D137 - McVitie Weston number), by Daven Radio Corporation.
Daven valve, type MU-20, red and black printed label, marked 67027, (RMW/D137 - McVitie Weston number), by Daven Radio Corporation.