SportsThe Block
The ‘Holy Grail’ of baseball cards is up for auction

What happened
Popular Science carries the lead headline, “The ‘Holy Grail’ of baseball cards is up for auction”. It was first reported in our feed on Oct 13, 2026 at 4:02 PM CT.
Only one outlet in the Insider.Cards feed has reported this so far; this page updates automatically if more outlets, auction houses or creators follow.
Who’s covering it
- Popular Science8The ‘Holy Grail’ of baseball cards is up for auction
Why it matters
- The Block. Auction results are real-money price discovery; collectors and dealers re-check comps for similar cards after notable sales and consignment announcements.
- Sports. It sits in the sports-card side of the hobby, which Insider.Cards ranks first on the front page.
Coverage timeline
- first reportPopular Science The ‘Holy Grail’ of baseball cards is up for auction



