Charlie, I saw one for the first time just within the last week, or so. Believe it was a D tip and may have been on eBay or GB. I'll check if it's in one of my "watch lists." I keep wondering if it may have been the same one pictured above?
That '63 Ford 427 piston has a TP logo on it - that "checks out" with your information in Post #3. - Bob
Attachment 113407Attachment 113408Attachment 113409