It is P.B., I've seen two, one was a George Blackwell, pressed on vinyl like the original with moulded label (with the ubiquitous Mick Derry name written on the label, I bet he bought it off Pep as an original), I paid someone £400 for that but got my money back - he had no idea it was a bootleg. I've also seen a Dave Newman demo which looks just like the original, vinyl press, and also I think the same guy did the Anderson brothers but that was done 3 times. Possibly there is a Billy Prophet vinyl boot as well. When they subsequently pressed george Blackwell et al at Monarch a few months later, several of those had P.B. in the run off but they were easy to tell as they were on styrene.