A 1975 New York Mets Team Signed Baseball with the key signatures: Staub, Kranepool, Kingman, Grote, Seaver, and Koosman is worth about $250.-$300. Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the baseball. Prices may also vary based on the amount of signatures, and key signatures acquired. The more complete the baseball with key signatures the more valuable. If the signatures are not properly authenticated the baseball could sell at half the market value or less.
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In order to answer this question the name of the team that signed the baseball would be needed.
Visit the Team Signed Baseball Price Guide located below (related Links). The price guide provides a list of teams, year by year values, and key signatures for that year. These signatures are the most important on getting top value.
This price guide is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signatures. Prices may also vary based on the amount of signatures, and key signatures acquired. The more complete the baseball with key signatures the more valuable. Signatures that have not been authenticared could sell at half the market value or less.
In general a 1975 Stamped signature souvenir baseball is worth about $10.-$20. Souvenir baseballs, with facsimile Autographs (Stamped) were sold at ballparks across the country. These souvenir baseballs have been a fan favorite for decades, and is one of the first souvenirs kids get when they go to their first Major league baseball game. Most of them have been used to submission, or the signatures faded over the years. But the few that make it through the years are desirable.