The product is a 1991 MLB Baseball Card Price Guide monthly publication featuring an uncut 5-card sheet with players such as Ken Griffey Jr., Don Mattingly, Dave Winfield, Dave Stewart, and Carlton Fisk. This sports trading card set is focused on Major League Baseball from the 1991 season. The cards are manufactured by Baseball Card Price Guide Monthly and provide collectors with a unique opportunity to add valuable and iconic players to their collection from that specific year.