Unverified50% confidenceFactExact time
Third-party grading services such as PSA (Professional Sports Authenticator) were overwhelmed with authentication requests during the card revival boom.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/26/2026
First Seen
Valid until: 12/25/2026
Sources
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https://kongchang.com/claim/951640API
curl https://kongchang.com/api/v1/knowledge/claims/951640MCP
get_claim(id=951640)