The 2023 Panini National Treasures - Signatures Mark Chmura #SIG-MCA Gold /49 is a highly sought-after sports trading card featuring the signature of former Green Bay Packers player Mark Chmura. This limited edition card is part of the 2023 Panini National Treasures set and is serial numbered for authenticity. With only 49 copies made, this card is a rare and valuable collectible for fans of the National Football League.