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History of the manufacturer  

Radiocoin (tube brand)

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Name: Radiocoin (tube brand)    (USA)  
Abbreviation: radiocoin
Products: Brand

Radiocoin is believed to be a re-branded tube from a generic manufacturer most likely sold in the New York City area during WWII.

Notations on the tube box (see tube model 6SJ7) show an "MR" which indicates that the tube was sold for "maintenance and repair" during WWII.  The referenced tube box also indicates the the tube was "MFG. for Duff & Co. Inc. N.Y.C. N.Y."

On June 20 1929, a Radiocoin Corp. of Wilmington, Delaware is incorporated in Dover, Del. with a capital of $500,000. It is currently unknown if this company is related to the tube brand.


This manufacturer was suggested by David Erali.