The 1948 Leaf Gum Company, Jack Dempsey, Knock-Out Boxing Card #1 is an original vintage sports trading card featuring Jack Dempsey from the Boxing league. Manufactured by Leaf in 1948, this card is made of card stock with a gray back variety. It is part of the base set for the 1948 Leaf Gum Company collection, representing the sport of boxing and English language text. A valuable piece for collectors of vintage sports memorabilia, this card captures a key moment in boxing history with Jack Dempsey.