Over the past decade, the Mantle card has appreciated 590 percent, the Aaron card 829 percent, and the Ruth card 305 percent. Like any investment, what goes up can go down, and investing in trading cards has its own risks. Mr. Huigens pointed out that many cards in the top 500 had fallen in value. Mr. Huigens said the rate of appreciation — and high prices — slowed beyond the top 100 cards. “I have a full set of cards from that year and extra cards, but they’re not the most highly graded,” he said.

Source: New York Times March 23, 2018 16:14 UTC