Not sure if you saw this, but good info. Looks like another Green Olajuwon sold for $500+ a few weeks back and his others have been selling very well.
2011-12 Fleer Retro Precious Metal Gems Price Tracker
I collect the following players: Yoan Moncada, Rafael Devers, Andrew Benintendi, Michael Kopech, Anderson Espinoza, Xander Bogaerts, Blake Swihart, Jackie Bradley Jr, Mookie Betts & Henry Owens. Please contact me if you have any FOR SALE.