This baseball has been personally signed by Mark McGwire of the St Louis Cardinals and Oakland Athletics. It has been inscribed with "583 HRs" to celebrate his milestone number of home runs. The signature is authentic and original, making it a valuable addition to any collection of baseball memorabilia. The ball is an official Rawlings Major League Baseball and a great way to show your support for the team.

The case pictured is included with the ball and is UV resistant to ensure the signature won't fade over time.