Frequently Asked Questions Q. What is PSA appraisal/PSA10? June 25, 2026 07:05 Updated PSA stands for “Professional Sports Authenticator.” It is the world’s largest and most widely used card grading service. PSA 10 refers to the highest grade in the PSA grading scale, indicating a virtually perfect card. Related articles How long will it take for my order to arrive? Who can use this service? Is there an expiration date on my products? My Credit Card has been charged but the points have not been awarded I want to check the condition of the cards I have won.