The Russian 6N3P dual triode is often listed as ECC42 equivalent. I searched everywhere for ECC42 datasheets. Could not find any. Did that tube really exist at some time?
Those listed as equivalents appear to be noval B9A based (9 pins), but an ECC42 would have been Rimlock (8 pins). I conclude that the ECC42 never existed. Possibly someone somewhere thought that the 6CC42 in the East implied the existence of an ECC42 in the West?
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