The 2019 Topps Museum Collection Factory Sealed Hobby Box includes 4 mini boxes per hobby box, with standard-sized baseball trading cards. This set features hard-signed autographs by athletes like Shohei Ohtani, associated with the MLB World Series. Manufactured by Topps, the cards are made of high-quality card stock and come in English language. This product is a valuable addition for collectors and fans of baseball memorabilia.