That may not sound very impressive upfront
Other CGC-certified highlights in the auction included: an Ishihara GX, Pokmon (2017) Black Star Promos TPCi01 60th Birthday Party Giveaway graded CGC 8.5 (lot 36079) that realized $45,000 a Phoenix Heart, Magic: The Gathering (2014) Richard Garfield Event Special Promo graded CGC 8.5 (lot 36020) that realized $22,500 a The Seal of Orichalcos, Yu-Gi-Oh
I know its disappointing to lose your C-Sphinx when there could be shenanigans like you and someone else both having them, but you can see how everyone else in the game might not enjoy that quite so much
More importantly, though, I want to talk about cards with very old original set foils
On the other hand, it's very possible that newer players could be fooled, especially when it comes to older cards that occasionally feel weird even if they are real, thanks to variance in the printing process, or things like Masterpieces that have a strange foiling process