I found this bike on the local Craigslist today and since it was nearby I decided to have a look. The ad described it only as an "Older adult sized bike" with the usual non descript, distant, non-drive side photo. Since it clearly was a Peugeot, I headed over. I think it is a PX10 (chrome fork legs and rear triangle, remnants of a 531 triangular sticker on the fork legs, etc...), but I have no idea how old this might be. Seller said that her 80 year old father bought it new and modified it for long distance touring, but had no idea when it had been purchased. The bike has been modified quite a bit from standard spec; a TA triple replacing the original crankset, Phil Wood clincher wheelset replacing the stock setup, randonneur bars, Huret rear derailleur and front Cyclone changer complete the picture. No date codes that I can find on any of the components. The original Simplex seatpost and stem are still with the bike - might those provide any clues to it's age? The bike was extremely dirty and crusty; it took the entire afternoon to remove racks, computers, and various homemade items that cluttered things up. I discovered a small dent on the left side chainstay that I hadn't noticed when looking things over in the sellers driveway. Any ideas on the age of this bike? Peugeot experts are invited to weigh in! My only observation from looking at the reams of PX 10 info on the Forum is that the head tube and seat tube lugs are not the ornate type seen on 1960's bikes, but that the fork crown is the type with two additional points or legs seen on photos of 60's bikes rather than the plainer type common in photos of bikes from the mid to late 1970's... Experts?