Sorry Cal. Even if I knew the answer to your question, I would refer you directly to Brad. I'm getting old and sometimes forgetful, fortunately I have friends like Brad and others who make allowances for that.
I have seen some Parkers and others on his for sale rack that he has refinished or restored- I'm not enough of a expert to know the difference in those terms, if any. I am sure he would be glad to discuss your fine old lifter Parker with you, and whatever he tells you will be the "Gospel truth"-
OT- but I read one of your other threads and sensed a note of frustration. For what it's worth, I am near 70, didn't grow up in the electronics age, and share your feelings. But I have been helped and befriended by many members of the PGCA, and I hope you will not give up either. There is a great deal of knowlege shared here about not just our beloved Parkers!
Let me know if you decide to contact Brad and how it works out for you.
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