How do I change my cards so they are available for trade?
I collect SP Authentic, Contenders Rookie Tickets, National Treasures, Adrian Pe
terson, Percy Harvin, Brett Favre(Vikings), Joe Mauer, Justin Morneau, and Aaron Hicks.
terson, Percy Harvin, Brett Favre(Vikings), Joe Mauer, Justin Morneau, and Aaron Hicks.