2021 Panini Mosaic Baseball Cards. Promises to deliver all the. On one of our most popular. Configuration : 10 packs/15 cards. 2021 Panini Mosaic Baseball Cards Box Hits. 2021 Panini Mosaic Baseball Cards PRODUCT HIGHLIGHTS. 100-card autograph checklist, featuring multiple budding superstars like. And current faces of the franchise like. Combine to create a. Massive 280-card base set. (6 of which are Hobby/FOTL exclusive). Giving collectors plenty to hunt for! Beautifully designed insert sets. Field Vision, Locked In, Rookie Debut. Today’s game is a melting pot of culture and. International Men of MASTERY. That come from all over the world to play! Nothing gets by these. Field Vision, as these guys are known as some of the finest defenders in the game! 5 different SSP insets. 2021 Panini Mosaic Baseball Cards Sell Sheet.