@Geck: If you can't get your hands on a deck be sure to let me know, mate.
@MudgeBlack / Alviaran: Glad you guys like the numbers.
The goal of the deck was to have as smooth a blend as possible between a Fate Deck and a Playing Card deck. The malifaux faction symbols are designed to look like the their corresponding suits. Spade-Crow, Heart-Ram, Club-Tome, Diamond-Mask. That is the actual translation scheme in the rulebook for using a standard deck of cards.
Indeed the cards 10 through 13 all use the same "1" which is stylized so as to blend effectively with a second number (1,2,3) and still look like the letters J, Q, K. Big props to Vexxus who encouraged me to come up with a scheme like this. He sketched it out on some scrap paper with a sharpie, and I then streamlined the concept.
You'll notice the tuck box even mentions that they can be used as a standard deck of playing cards.