FREE 5-CARD GRADING CHALLENGE

PSA saw a 10. Do you?

Call the grade on five real cards. See the slab after every guess.

5 cards · About 2 minutes · No signup

Finish the run to see your score and grading accuracy.

Preparing secure guest access…

A necessary cookie saves your run so you can claim your score if you sign up. Privacy Policy ·

Example round

Card 1 of 530s

Front

Back

Guess the Grade

Example only

Card-specific grade choices appear when the run starts. Nothing can be submitted from this example.

Reveal stays sealed until your guess is locked.

How it works

1Inspect the front and back
2Lock in your grade
3Reveal the slab and see your score

You don’t need to know the set. Look at the card: centering, corners, edges and surface.

Tap a card to inspect it up close.

After five cards

Your score is only the start.

See the result for every card
Receive a five-card score
Save the practice score after signup
Build a grading record through full Blitz
Unlock official Blitz features after verification

Full Blitz and practice-JKB Wager

Create and verify an account to unlock full Blitz and practice-JKB Wager.

Eligible verified accounts receive a one-time 100 practice JKB starter. Practice JKB has no cash value and cannot be withdrawn or redeemed.

Your browser saves this practice run so you can claim the score after signup. Guest scores do not affect official Blitz rankings, rewards or balances.