Having held a Lemond RDS frame and closely inspected it, they are no nonsense high quality frames made of standard tubing of the day. If a racer attributed frame comes up, the dimensions would be the first thing I would check, since there is little else to distinguish a top level frame from what a cat 3 rider with some funds would have been able to get.

Others clearly want the attribution of a particular frame, but I would just as soon save my money and see the same bikes in a museum. YMMV