The 2023 Topps Chrome Platinum RC Rookie #99 Mark Appel Refractors trading card is a sought-after collectible in the baseball sports trading card market. This card features Mark Appel, a rookie player from the Philadelphia Phillies, in a special refractor parallel variety. As part of the 2023 Topps Chrome Platinum Anniversary set, this card is a valuable addition to any collector's portfolio, showcasing Appel as he began his career in Major League Baseball.