All I can Say is WOWW. Ive never seen that sell sheet. there are a lot of cards that never got made on that sell sheet. Davis gear, cain auto, lesnar mat, amir and cb dual. None of those were ever made.
It is possible that they were made and are currently sitting in the Topops vault as a 1/1 proof. There were a few main event autos like this (I believe vitor belfort was one) where the proof auto was released for auction by Topps but the card was never actually made. I think there were a few examples of this in Main Event.
So it is definately possible that Topps has the proofs sitting in their vault, however we will never know until topps decided to open up the vault for the round 1 proofs. and this may not be for like another 25 years, considering its there first release, and the set is so valuable.