These 5 baseball cards are so rare even collectors can’t believe they exist
Photo: shutterstock The Junk Wax Era (1986–1994) flooded the market with baseball cards, making most of them cheap and easy to find. But a few slipped through the cracks—cards so rare that even veteran collectors aren’t sure they’re real. Here are five of the rarest baseball cards ever made. 1990 Donruss Brian Downing “Diamond Kings”…