Photographic postcard of four unidentified men

A photographic postcard of an oval shaped picture of four unidentified men posed in front of a door. Two of the men are seated, while the two other man stand behind them. All of the men are wearing suits and different styles of hats. The man standing on the right side of the group is smoking a cigarette. The back of the postcard is unused and has a CYKO postage stamp and [POST CARD] in black ink. The back also has a handwritten inscription of a number on the left side.