My '78 PS10. Paul offered to buy this from me in '93.
Only reason I could think of was by that time, he didn't have very many originals left in excellent condition. I really don't know though. However it was a Christmas gift from my parents and I could not part with it. He flipped it over and signed the back. Even took the time to say take it to a luthier and have some clear coat sprayed over the sig.
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