Of course, only the cards in the best condition could make it in the top 10 most valuable Topps baseball cards. So, the highest selling Roberto Clemente so far is an almost perfect card that sold ...

Mess with the bull, you get the horns — mess with the most valuable Michael ... only 15 of these cards exist. With an almost ...

Harper came into the league as one of the most hyped prospects in recent memory and has largely delivered on that promise. His card market reflects his Hall of Fame-caliber career, with his 2011 ...