Curtis Dowling and his team of investigators try to determine whether one of the most sought-after sports collectibles of all time, a Honus Wagner T-206 baseball card, is real or fake. Often referred to as the "Holy Grail" of sports collecting, the card sells for over $1 million, depending on its condition. So, is this Wagner card real or fake?
Tune in to "Treasure Detectives" on CNBC Prime, Tuesdays at 9 p.m. ET