BTS Blitz / Free challenge
PSA saw a 10. Do you?
Inspect the card. Guess the grade. See the slab.
5 cards · About 2 minutes · No signup
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Example round
Example only · Grade choices appear when you start.
Inspect either side up close. The grade stays hidden until your guess.
How it works
Inspect
Look at the front and back.
Guess
Lock in your grade.
Reveal
See the slab and your score.
Look for centering, corners, edges and surface.
Tap a card to inspect it up close.
Keep playing.
Save your score after signup. Verify your account to unlock full Blitz and practice-JKB Wager.
Guest play & JKB
Guest scores do not affect official Blitz rankings, rewards or balances.
Eligible verified accounts can unlock a one-time 100 $JKB starter. Practice $JKB — no cash value. It cannot be withdrawn or redeemed.