I went to Yankee Stadium on August 29th 2007 and I got A Joba Chamberlain Autograph on an MLB Authentic baseball. How much is it worth???

$2.00...literally..ppl know joba..but he hasnt proved anything...that's exactly the price i would pay u..

Keep it along with the ticket stub and cherish the memories.

nothing

i will buy it for 250.00$

Its really worth very little like 5 bucks I am a big Joba fan so I you are willing to sell it ill pay 20 bucks

Your ball is worth between $50 and $80 right now. The price is highest in New York and in Nebraska. If you had it authenticated by PSA, it may go as high as $100. Joba will either be a star and the price of the ball will rise to $125-$200; or he will flop and the ball will drop to $25-$30 for a Nebraska fan. Either way, Id recommend have it authenticated since its on an MLB baseball.