AI Appraisal Estimate

This is a standard-sized souvenir baseball featuring the logo of the Pittsburgh Pirates MLB team. The ball is constructed with a white synthetic or leather cover, held together by traditional red stitching. At the center of the sweet spot is a printed graphic showing the vintage 'Pirate' mascot within a golden-yellow diamond frame, used by the team during the late 20th century. Below the logo is a hand-signed autograph in blue ink by former All-Star pitcher and broadcaster Steve Blass. The signature appears fluid and bold, indicating the use of a felt-tip marker. The baseball is housed in a two-piece round acrylic display sphere that sits on a square black plastic pedestal base. The ball's surface appears well-preserved with minimal yellowing or toning, suggesting it has been kept out of direct sunlight. The display case shows some light surface scuffing but remains clear. This item represents a piece of Pittsburgh sports memorabilia, celebrating Blass's long-standing connection to the franchise, likely dating from the 1990s to the early 2000s based on the logo style and signature consistency.

I have examined the digital representation of the Steve Blass autographed Pittsburgh Pirates souvenir baseball. The item presents in excellent display condition, exhibiting a crisp white cover with minimal ultraviolet-induced toning. The blue felt-tip signature on the sweet spot is fluid, consistent with Blass’s known late-career script, and shows no significant fading or ink bleeding. As a souvenir-grade ball rather than an Official Major League (OML) baseball, the value is inherently capped as collectors typically prefer professional-grade leather. Steve Blass remains a beloved figure in Pittsburgh history due to his 1971 World Series heroics and decades as a broadcaster; however, his signature is relatively common in the marketplace due to his accessibility and long tenure with the team. Market comparables for souvenir-grade Blass balls generally fall between $30 and $70. The inclusion of the protective acrylic display and pedestal adds approximately $5-$10 in secondary value. Limitations: This evaluation is based on image analysis alone. I cannot definitively verify the ink depth, potential autopen usage, or the texture of the signature. A full authentication would require a physical inspection to confirm the signature's pressure points and a certificate of authenticity (COA) from a reputable third-party service such as PSA/DNA or JSA. Provenance documentation regarding the signing event would further solidify his valuation.