This is a very good small book surrounding the acquisition and sale of McGwire’s 70th home run ball. It covers a lot of territory, from the physical structure of the ball, now and historically to information on where it is made, to the mud used to coat the balls, and why. We learn much about the collectible arena. Paisner explains the secret information that was printed on the final batch of baseballs used while McGwire batted. There is a cast of characters here far beyond the ball’s recipient. One entrepreneur wants to cut the ball up and sell the pieces. We learn that MLB used extraction teams to remove from the crowd the catcher of potentially lucrative baseballs. It is a fascinating tale, enjoyable and informative.