A Billy Williams single signed Baseball is worth about $40.-$60.
Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been properly authenticated could sell at half the market value or less. Add for inscriptions. Collectors will pay more for inscriptions like "ROY 61", or "HOF 87" and pay less for personal inscriptions like "Good Luck Chuck" In a recent auction a Billy Williams single signed baseball inscribed "HOF 87"sold for $53.
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