I managed to locate two more of these kinds of stamps while rummaging through my collection and they are both railroad related.
The first photo shows a very nice gold seal for the Standard PCC accompanied by an RF20 10-Cent tax stamp cancelled by S.P.C. Co. which dates this deck to around 1926. The deck shows, perhaps, the New York Central Lines most famous train, the 20th Century Limited (Boll NYC-2).
The second photo shows a stamp from the Pennsylvania Railroad on a deck of cards manufactured by NYCC and it shows a reversible image of the Broadway Limited also issued some time in the mid-1920's (Boll PRR-7b).
Thank you to any and all contributors to this website who are able to provide clearer pictures of those stamps I have already posted as well as any stamps from other playing card manufacturers.