2 and 8 get mis read on xfmr plates a lot?
or is this an octal plug in out of an SS mixer?
there is talk on the forum of this transformer, i even might have taken one apart, but where?
do a search, there is something in the "one bottle" threazd, but i could not find it in the 33 pages
that is pobably a small utc input for a rca ba type transitor amp, so prr got it right.
is it lite gray and 1/4 the size of a fidel castro cigar?
i guessed pin 7, it is the core.
here is rev 2, see if this makes more sense.
you may have a broken connection at the header plate on pin 2.