McVitie Weston valve collection, Telefunken valve, type RES164
- maker:
- Telefunken
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© The Board of Trustees of the Science Museum
Telefunken valve, type RES164, base marked Z3
Science Museum Group
© The Board of Trustees of the Science Museum
Telefunken valve, type RES164, base marked Z3, (RMW/Y50 - McVitie Weston number), by Telefunken.
