Marconi Triode (help ID)

This is Marconi Triode (pre WWII) I can not identify.

Officine Radio Marconi Genova DES.1 is written on it, also serial numbers and Marconi paper labels

I put them here, because they use the same (jumbo) socket like US 211 VT-4C and German’s RS237. They are also the same size.

Despite asking on many forums and FB it’s still unidentified!


Click to see all 203 211 VT-4C triodes in stock


2 thoughts on “Marconi Triode (help ID)

  1. David Thatcher

    I would compare one to a German SL50 used in radios in WWII and invented by Telefunken and see where that leads you.
    David Thatcher, Dallas,Texas.


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