Mini Blank Back Cards in Aspirin Box

I found these cards at a flea market and bought them because it was a full deck and they looked cool. They are very simple blank back playing cards that were stored in the vintage aspirin box you see in the picture. The cards are not all that well made as some of the numbers are cut off on the edge of the cards, as you can see on the ace of spades. I was just wondering if anyone knew anything about these cards to satisfy my curiosity.

Thanks,
Steph