Here is an add for a 753 Peugot.
http://sfbay.craigslist.org/pen/bik/240383278.html I am not the seller of this bike so I hope the craigslist reference doesnt get me into trouble. I'm thinking of buying this bike. As far as I know Reynolds only made steel tubing. The seller said he would take 450. If it is in fact a Reynolds 753 frame I would say its a deal.