A rare Wayne Gretzky card worth USD$3.72 million is back up for auction. Here are other alternative assets worth betting on.

Each box is said to contain 48 individual packs and in all of those packs there should be around 20 pristine Gretzky rookies.

Overall there are thousands of unopened 1979-1980 O-Pee-Chee brand hockey cards inside. Experts estimate there could be 25 to 27 Wayne Gretzky rookie cards inside. The value of Gretzky rookie ...

A Saskatchewan family made headlines after selling a rare, unopened case of 1979-80 O-Pee-Chee hockey ... of hockey cards and dozens of potential Wayne Gretzky rookie cards, was sold through ...

Inside there could be more than 20 "rookie cards" of Wayne Gretzky, one of the sport's greatest ... called the discovery of the pristine 1979-80 cards from the now-defunct O-Pee-Chee candy and ...