Well, I just got myself another one of these cheap bikes. It's a Merckx Corsa, yet I'm a bit confused. The seller told me via email that it was made out of Reynolds so I assumed that it was 753 since I've never seen or heard of a Merckx, other than a Falcon or Kessels, made out of 531. Does this seem right? I was so excited thinking I was going to have a Merckx made out of Reynolds 753. Darn!! I know I must post pics but I just got home with it and it's raining outside. I'll post pics later this evening. Also, the serial number indicates it's a Professional but it has the Corsa Decal. WTF??? Thanks for the help in advance.