McVitie Weston valve collection, Telefunken valve, type RV218III
- Made:
- 1925
- maker:
- Telefunken
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© The Board of Trustees of the Science Museum
Telefunken valve, type RV218III, marked 11428/108, 1
Science Museum Group
© The Board of Trustees of the Science Museum
Telefunken valve, type RV218III, marked 11428/108, 1.1A, glass internally spotted, (RMW/J39 - McVitie Weston number), by Telefunken, 1925.
