The product is a vintage Beckett Baseball Card Monthly magazine from May 1990 featuring Don Mattingly along with other players such as Gaylord Perry, Bert Blyleven, and Tony Gwynn. This issue is part of volume 7, issue 5 with a total of 96 pages. It is a price guide in paperback format published by Statabase, Inc. in the United States, specifically focusing on baseball trading cards. The magazine includes illustrations and is written in English, making it a valuable addition for collectors and fans of the New York Yankees and other notable baseball players from the 1990s.