As far as Unopened packs and wrappers go, there are few that are are rare as this - a 1952 Parkhurst (Frostade) BASEBALL hard paper/cardboard wrapper which once held a group of cards with perhaps a Tommy Lasorda or Walt Alston included. Frostade was the Canadian competitor to our Kool-Aid and issued just this one set in '52. One of the wrapper worlds biggest scarcities!