Basketball card definition
What is a PSA 10?
PSA's Gem Mint grade, representing the grading company's assessment of a card under its published standard—not proof that the card is rare.
Last verified 2026-09-02
How collectors use the term
A PSA 10 can combine strong condition and liquidity, but modern base cards may have thousands of gem-mint copies. Grade population and underlying card supply must be read together.
Why it matters
A large label premium can disappear if buyers have many equivalent copies or if the PSA 9 spread is too wide.
How to verify it
Verify the certification number, exact card identity, current population, and recent same-grade completed sales.