I've learned that the PX-10 in question is being sold by none other than our illustrious Listmesiter himself. I thought it looked similar to one I saw hanging at CdO at a couple of Cirques. He also has a Holdsworth Professional up for auction. I'd try for it myself except that I have two Holdworths already on my project list. I absolutely love the classic Holdsworth orange/blue color combination. I've added blue straps and brake cable and plan blue brake hoods and bar tape for the orange Schwinn World Voyageur I recently converted to 650B wheels. Bid early and often.
Big Spring, Texas