The 43rd annual National Sports Card Convention, colloquially known as The National is currently ongoing and in town (suburban Rosemont, actually to be specific). You won't have to look hard to find a 52 Mickey Mantle card, as this convention inspires people to bring only their best and brightest cards to trade and sell. And the 1952 Mickey Mantle baseball card (Topps; #311) … [Read more...] about 52 Mickey Mantle Card Defaced, Loses Tens of Thousands in Value