Legend has it (ok not legend, just the word on the street) is that there are only 5 PSA 10 graded cards in existence
Antiquities, 1994: $10,391 Antiquities was a very small set of 100 cards, and almost all of them are more than $1
PS Platinum Secret Rare QCSE Quarter Century Secret Rare Creature Swap X SPELL Each player chooses 1 monster they control and switches control of those monsters with each other
These range from annoying visual and audio errors to game-breaking bugs that affect the meta's most competitive decks, like Kevin Clemente's example in Gardevoir ex
Cavalier of Gales Cavalier of Gales is a Brainstorm on a 5/5 body for 5 mana, which is better value for a creature than blue usually gets
of those, 83 are worth more than $50, and a handful of them, much more