Matthew Schaefer

Matthew Schaefer is a professional hockey player featured in Upper Deck trading cards as a promising young talent, highlighted in 2025-26 sets alongside prospects like Ivan Demidov, marking his significance as an emerging NHL rookie[1][2][4].

First released in the 2025 Upper Deck Allure set during the 2025-26 hockey card season[1][2][4].

• AR-MS designates the Black Rainbow Extended Rookie variant in the base Allure set[4].
• Extended Rookie cards are parallel versions emphasizing rookie status, with Color Flow inserts like Red Orange (CF-MS) and Blue Purple also available[1][3].
• Featured in hobby box breaks as a chase card alongside high-profile rookies[2].

Condition. Check for centering issues on colorful parallels like Black Rainbow, edge chipping on extended rookie borders, surface scratches on Color Flow variants, and print defects common in 2025 Upper Deck production.

Storage. Store in semi-rigid holders or top-loaders with sleeves in a cool, dry environment away from sunlight to preserve vibrant colors and prevent warping.

Authenticity. Verify Upper Deck holograms and card stock thickness; compare serial numbers if present against official checklists; fakes often have off-color printing or incorrect fonts on AR-MS numbering; use graded/graded population reports for graded authenticity.