What is the value of a baseball autographed by the 1959 Pittsburgh Pirates?

A 1959 Pittsburgh Pirates Team Signed Baseball with the key signatures: Groat, Clemente, Mazeroski, Friend, Kluszewski, and Stuart is worth about $600.-$800. 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. I don't have recent information on a 1959 Pirates Baseball, and the price above might need to be up dated but should be close. In a recent auction a 1960 Pirates Team-Signed Ball sold for $1,181. The Clemente signature should keep the value of this baseball on the rise. If the signatures are not properly authenticated the baseball could sell at half the market value or less. For more information on team signed baseballs, links to full team rosters, key signatures, and price guide visit the following page from the link I left below.