How many of you knew that swimming trading cards even existed? Join the club. The average sports memorabilia collector likely has mountains of trading cards featuring the stars of football, basketball and baseball, but only a few savvy sports fans were astute enough to invest in swimming trading cards prior to this year’s Summer Olympics in Beijing and now they’re cashing—-big time. Of course, those collectors have none other than Michael Phelps to thank for making swimming trading cards mega-popular these days. According to reports, an autographed 2004 trading card of the swimming phenom, who was recently named as the … Continue reading →