PSA 9 is Dead. All Hail Gem Mint 10

Is the PSA 9 dead? I dove into the data across three eras (vintage, modern, ultra-modern) and four sports (baseball, basketball, football, soccer) to find out when PSA 9s hold value, and when they're just an expensive failure certificate.

The numbers are staggering: PSA created 31 million new 10s since 2020, compared to just 5 million total from 1991-2019. In 2025 alone, 6.5 million new PSA 10s entered the market. When gem rates hit 60-70%, the 9 becomes meaningless.

In this episode:

Why vintage PSA 9s command massive premiums over raw
Why modern PSA 9s (Luka, Ohtani, Mahomes, Messi) are collapsing to 2x multiples regardless of scarcity
Why Wembanyama has MORE PSA 10s than 9s and what that means for the hobby
The one number that determines if your PSA 9 has value
Actionable advice on when to grade, when to hold 9s, and when to crack and sell raw
The thesis: It's not about the sport. It's not about the player. It's not even about the era. It's about the gem rate. Know your gem rate, Know your market multiplier.

Keywords: PSA grading, PSA 9 vs PSA 10, sports card investing, gem rate, card grading strategy, vintage cards, modern cards, Wembanyama, Luka Doncic, Shohei Ohtani, Patrick Mahomes, Lionel Messi, soccer cards, basketball cards, baseball cards, football cards, alternative investments, collectibles market

Weekly Newsletter Signup: Slabnomics.com
🎥Youtube
📸Instagram