2023-24 U D OPC Glossy Rookie KSA Graded 9.5 Near Gem Mint Matthew Knies # R-24. This trading card features rookie player Matthew Knies from the Toronto Maple Leafs, manufactured by Upper Deck. It is part of the OPC Glossy set for the 2023-24 season of the National Hockey League (NHL). The card is in English language, with a standard size of 35 Pt. and a glossy finish, making it a valuable addition for any sports card collector.