What is a baseball signed by the 1971 Pittsburgh Pirates in an unopened original bag worth?

Answer 1

According to the collector's price guide "Team Baseballs," your ball is worth $650, but this value can be greater or lower depending on players present - in particular the inclusion of Hall of Famers Roberto Clemente and Willie Stargell - plus the all-important overall condition of the ball and Autographs. Other key factors include type of ball (is it an "Official National League" ball?), whether there are any "clubhouse signatures" (autographs signed by ballboys, attendants, etc), and number of signatures present. Player autographs were often signed by clubhouse attendants, so authenticity of the significant signatures is still the main factor in determining overall value - particularly with regard to Clemente. Also, one should not confuse a hand-signed ball with "stamped" balls featuring facsimile signatures sold in stadium kiosks as souvenirs.