Introducing the highly sought-after 2023-24 Black Diamond Rookie Gems 10/399 Matthew Knies RG-MK card, featuring the up-and-coming hockey star in his rookie season. This limited edition card is a must-have for any sports card collector, with only 399 in existence. Each card is certified and numbered, ensuring its authenticity and value. Matthew Knies has shown immense potential in the hockey world, making this card a valuable investment for any fan or collector. Don't miss the opportunity to add this rare and exclusive card to your collection and showcase your support for the future of the sport.