M Ted, you are of course right, but it was a natural mistake. In the Complete Beatles, the key being C, the progression goes, C, Em, Bb, F, G11, G7, and then G7+ ("I get high when I see you go by, my oh my") . And I thought what the hell is that? And then I went to a site somewhere, where the key changed and the G7+ was turned into a B7+. So, I check in my guitar chord book and it has B7+5, which, in my original question, was what I asked -- if that was the default when you saw an augmented sign after a 7th. I had no idea that it was specific to guitar, or related to the song. I just assumed it was part of the general musical notation language that hadn't found its way into the sandy shallows of my mind.
yours, Peter T.