"Daphne + Dave" wrote in message
news:e3Bvg.209201$iF6.198236@pd7tw2no...
Is this such a "rare" tube? Fits Collins.
I don't know about how rare it is. It was also used in the Johnson Viking
(maybe called the Viking 1 as there was a second version that used a pair of
6146 tubes that is the equal of the 4D32).