Cassius Clay (Muhammad Ali) and Sonny Liston
Heavyweight boxing champions and historical sports figures · Boxing
AI-generated identification · may be incorrectBefore you rely on this
This report was produced by an AI model from a photograph. It is not an authentication, a certificate of authenticity, or an appraisal. Verify important details with a qualified third-party authenticator before buying, selling, insuring, or valuing an autograph. Read the full disclaimer.
Era
Circa 1963, contemporary to their bouts
Item Type
Certificate of Authenticity document from Global Sports Authentication
Condition
Good, visible creasing and paper aging on the certificate
Overall Assessment
This is a secondary market certificate referencing dual Hall of Fame boxers, but the lack of the actual signed items severely limits value and requires expert verification
AI Estimated Value
Not an official valuation50 to 150 dollars for the COA document alone, though the actual signed cuts referenced are missing
AI can make mistakes. This estimate is for general guidance only, not a professional appraisal. Actual value depends on authentication, condition, provenance, and market demand.
Get It Authenticated
Submit to PSA/DNA or JSA for primary signature authentication if the corresponding autograph cuts are ever recovered