For generations, the Honus Wagner T206 baseball card was considered the rarest, most valuable card in existence. In the baseball card world, it's known as the "Holy Grail". Perhaps the only card that could possibly challenge it is the Topps 1972 Mike Schmidt rookie card, which was mistakenly printed with a picture of his teammate's penis in the background. However, until recently, nobody was sure if the "White Elephant" even existed. Until now.