The TdF and Super Corsa have the names on them. They also have a cute "custom made" decal.

The prices I've seen on TdFs have been quite reasonable compared to Peugeot Px10s. I only paid $123 for my TdF on eBay last year. The only things seriously wrong with it was that the Stronglight 93 crank had been replaced with a T.A Cyclotoutiste and it had a cheap French wheelset. I saw a Super Corsa go for $300 not long ago. They're full Campy NR. I also have a PX10 and I prefer the way the Gitane rides. The headtube on the Gitane is less steep, so it's not so twitchy. The Gitane also has an undersize downtube that I think contributes to its comfortable ride. It doesn't sound like I'm describing a frame built for racing, but Gitane won the Tour de France ten times.

I don't know anything about the models below the TdF. I don't think any of them had Reynolds 531 frames.