Very interesting
Like Adam pointed out, Ive only seen the black border cards before. I had never seen Leon's white border ones before today. But I dont know much on the set(s) besides seeing a large group of the black ones a few weeks back. Id only seen a couple example before that.
some (or all) of the info youre seeing on the Internet may be for the black border set ???
Here is an image of one of at least two Dihigo cards from the black border set (not mine, I wish) (Other known Dihigo is #255 per OLD CARDBOARD site)
Another question, there was also 2 different backs (brands) for the black border cards... (these were sold on eBay recently by same seller in same group) The scarcer one of the 2 seems to be the "E. Quintana & Ca." back, but Ive only seen a couple dozen of these cards total.

also note that one has 1931 (w/L.Aparicio Sr.) the other 1932