Not returnable if opened! The product is a 1989 Upper Deck Baseball Cards High Number Series Box, factory sealed, containing 100 cards. This box belongs to the Major League (MLB) and the set is from 1989 Upper Deck. Manufactured by Upper Deck in the United States, the cards are made of card stock and are not autographed. This sports trading card set is a vintage collectible from the 1989 baseball season, perfect for fans and collectors looking to add a piece of baseball history to their collection.