[ARC5] 211 tube or similar 4 pin footprint tube

[Michael Kana]

Hello all 
Long shot but I’m figuring arc 5/boat anchor collectors have varied collections of parts….
I’m looking for a larger triode transmitting tube similar to a 211 (4 pin). 
Duds ok - I’m looking for a tube base to build an adapter to a smaller triode such as a 45. 
Or if there is still a bit of life, it’s a possibility. 

I have a 1929 Hartley transmitter bread board that has the larger 4pin ceramic socket. This is an authentic 1930 build and I do not want to change or modify the build. 

Thanks 73
Mike
AA9IL

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