How much is a non authenticated baseball signed by bob Gibson?

Answer 1

A Bob Gibson single signed Baseball is worth between $50.-$100. 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. Signatures that have not been properly authenticated could sell at half the market value or less. Inscriptions such as "HOF 81" will sell for more. Personal Inscriptions like Good Luck Chuck" will sell for less. In a recent auction a Bob Gibson single signed baseball inscribed sold for $95.60

Answer 2

Bob Gibson single signed baseballA Bob Gibson single signed baseball is worth between $50.-$100.

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. Signatures that have not been properly authenticated could sell at half the market value or less.

JSA (James Spence Authintication) is a trusted authenticator, and the value will hold true as stated above.

In a recent group of eBay auction (1/2010) a Bob Gibson single signed baseball sold for a high of $64.00