10 record-breaking PSA-graded baseball cards, from Wagner to Trout
- Wagner: 8 events in the last 90 days
- Previous: 8 days earlier · Derby defeat to Gladbach could end Wagner's reign at 1.FC Köln
What happened
The most valuable PSA-graded baseball cards reveal why rarity, grade and provenance still drive the hobby's highest sale prices
Summary assembled by rule from the sources below