Wowsers! I've never noticed that before, but the fox face on the playing cards is a dead ringer for the fox face on the C&S chips. In fact, they are exactly the same and share the same origin, as both are from the United States Playing Card Company (USPCC).

The USPCC has long had a subsidiary called House of Haines/Fox Lake, which produces magician decks. The deck noted by Roy Klein is known within magician circles as a Svengali deck. Roy, you should also note that all those 3's are also a fraction of an inch shorter than all the other cards. (When arranged as every other card, using your left thumb, flip through the cards and then do the same with your right thumb. If you do it right, the deck will look like a regular deck in one direction, and then a deck of 3's only in the other direction.)

I was introduced to Svengali decks some 55 years ago, when I was interested in sleight-of-hand magic with playing cards. A Svengali deck is a transition deck from being purely mechanical to require a minor degree of sleight-of-hand.

Haines House of Cards is/was located in Cincinnati, OH, nearby, if not on the same property as the USPCC. The USPCC manufacturing facility was a humongous building, taking up several city blocks, and was only recently razed. If you visit the USPCC history website, I believe that Fox Lake Playing Cards are noted. Scanned here is an Ace of Spades from a Fox Lake deck I have (multiple 7 of Clubs), which used the same date code methodology used by the USPCC.