The 2025 Topps Chrome Cosmic Marcelo Mayer Rookie Planetary Pursuit Mercury RC SSP trading card is a rare and highly sought-after collectible featuring the talented baseball player Marcelo Mayer. This card, part of the MLB World Series set, is a Chrome parallel variety with a 35 Pt. thickness, making it a valuable addition to any sports card collection. Authenticated by Topps, it is a short print, rookie insert with a limited print run of 199, showcasing Mayer in his Boston Red Sox uniform for the 2025 season.