Some of the most prized baseball cards are rookie cards ... card because it's also very valuable and very rare. Few players ...

Just know that anyone buying a 1980s baseball card collection ... is giving away homemade packs of "common" cards -- the ones are aren't terribly valuable -- to trick-or-treaters in packs.

It’s a card that for many years wasn’t even known to exist, until the 1970s or ‘80s,” national rare sports card auctioneer ...