These four gents are wearing the classic suits and hats made iconic by the bad guys of the era. The gentleman to the front right has the perfect looks and demeanor for the style, doesn’t he? He looks like the leader of the pack, and he stands out wearing a light colored suit against his friends’ darker ones. Interesting detail is no one’s holding a smoke in their hand, but they’re all smiling!
RPPC: I haven’t seen this type before. It has a stamp box with S in each corner.