There are a couple of things we know about these cards that I think are very revealing:
- Almost all of the known examples (arguably with the exception of the O'Hara example) are cut in a very uneven manner that is consistent with hand-cut cards
- the white borders are much wider than other cards of the period
- the stock is thicker than other cards of the period
I'm confident they were hand cut, which means that this was either a strip card set with very wide borders in between the cards, or they were hand cut from a box or some type of advertisement.