1948 Leaf Knock Out boxing cards share the unconventional numbering of Leaf’s baseball set from the same year. There are 50 cards in total for this set but the numbering goes up to 102 which, no doubt, left contemporary collectors searching for 52 very impossible cards to find.
The card design follows the standard 1948 design for Leaf with a color palette that broadened the possibility for printing defects.
1948 Leaf Knock Out Checklist
Base Set – 50 Cards
| 1 | Jack Dempsey |
| 2 | Sammy Angott |
| 3 | Benny Leonard |
| 7 | Mickey Walker |
| 8 | Arturo Godoy |
| 9 | James J. Jeffries |
| 13 | Beau Jack |
| 15 | Tony Zale |
| 17 | Jack Johnson |
| 18 | Jackie Fields |
| 19 | Kid Chocolate |
| 20 | Harry Greb |
| 24 | Sammy Mandell |
| 25 | Abe Attell |
| 27 | Tommy Loughran |
| 29 | Jimmy McLarnin |
| 32 | Max Schmeling |
| 33 | John Henry Lewis |
| 35 | Henry Armstrong |
| 36 | Melio Bettina |
| 38 | Jack Sharkey |
| 42 | Marcel Cerdan |
| 44 | Bob Montgomery |
| 47 | Billy Conn |
| 48 | Joe Louis |
| 50 | Rocky Graziano SSP |
| 51 | Willie Pep |
| 55 | James J. Corbett |
| 57 | Chalky Wright |
| 58 | Barney Ross |
| 60 | Gus Lesnevich RC |
| 63 | Bob L. Fitzsimmons |
| 64 | Ray Robinson |
| 65 | Al Hostak |
| 67 | Georges Carpentier |
| 69 | Jess Willard |
| 71 | Freddy Steele |
| 73 | Gene Tunney |
| 74 | Fred Apostoli |
| 77 | Tony Canzoneri |
| 78 | Johnny Coulon |
| 80 | Ceferino Garcia |
| 82 | Fritzie Zivic |
| 88 | Lou Ambers |
| 90 | Primo Carnera |
| 93 | Max Baer |
| 95 | Tony Christoforidis |
| 98 | Harry Forbes |
| 101 | John Sullivan |
| 102 | Jake Lamotta |