Mark McGwire
MLB home run record-breaking slugger, Oakland Athletics and St. Louis Cardinals · Baseball - MLB
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 late 1990s, peak career
Item Type
Official Major League baseball, sweet spot placement
Condition
Excellent; clean white leather with no fading or visible staining on the signature
Overall Assessment
This is a highly desirable sweet-spot signed ball with strong visual appeal and clear letter formation, making professional certification the essential next step
AI Estimated Value
Not an official valuation$100 to $200 unauthenticated, increasing to $250 to $400 with third-party certification
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 formal authentication, with costs typically ranging from $50 to $100 and standard turnaround times of a few weeks