His Airness and the Black Mamba on one card? That dual signature just obliterated every auction record at $12.9 million! This isn't just cardboard - it's basketball royalty frozen in time. The fact it sold on what would've been Mamba's 47th birthday makes it even more legendary. Only one exists, period. No reprints, no second chances. Some collector just bought the ultimate flex piece that every hoops fan dreams about. Which GOAT signature makes this card more valuable to you? #Sports #Basketball #GOAT