I just picked up what they claim to be a 1970 libertas road bike. They also claim to have a full 531 reynolds frame. There are very small remnants of a decal. I under the quality of the decals back then were'nt very good. serial # on bb is 42262, then there is a 72 stamped underneath that. there is also a 61 stamped on the head tube on the bottom towards the rear bottom. (The head tube is the tube you slide the forks in right?) Seller also claims the model is a "grand champion", but I see no evidence of that. It has decals that appear to be all original that says the bike is made in belgium. It used to have some campy derailleurs, but he said they were junk back then, so they put on some suntour V-GTluxe derailleurs. Has rigida rims made in france, and ofmega quick release hubs made in italy. The bike weighs just under 25 lbs. I would just like to authenticate and find out which kind of 531 frame it is.