We went from psychedelic to disco; from the end of flannels to flashy double-knits and striped caps. The Ed Sullivan Show died and Saturday Night Live was born.

Baseball cards brought us some memorable players and with more than 35 years since the last of the decade’s debut cards arrived, we can look at which 1970s Hall of Fame rookie cards offer high-end collectors the biggest challenge. A top 10 list of the toughest ones to find in PSA 10 (gem mint) grades.

The current quantity of 10s is listed in parentheses below. Click the links to see if there are any currently listed on eBay–along with some more pedestrian examples.

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