This is an official game ball from the 2008 MLB Opening Series held at the Tokyo Dome (Athletics vs. Red Sox). It's a very valuable collector's item with autographs from a total of three players, including Daisuke Matsuzaka of the Boston Red Sox, who was a key player at the time. [Autograph Details] 1. Daisuke Matsuzaka: See image 5. The unique signature shape from 2008, with the number 18 visible. 2. Justin Duchscherer: See image 4. Pitcher for the Athletics. 3. Mike Sweeney: See image 3. Key hitter for the Athletics. [Item Condition] Stored in an unopened official display case. The ball itself is in good condition, and Matsuzaka's signature is still clear. Latest Market Data Considering the added value of Daisuke Matsuzaka's autograph and the "2008 Japan Opening Series official ball," the market price is as follows.