Dina, in my view, same pattern, even with the few variations. As the backs are so markedly different, I'd guess either a different maker or same maker, but an additional run. Also, it wouldn't surprise me if the maker only marked a part of a pattern run, not necessarily every individual tile. As the backs are different and the one unmarked, Len may consider it for two entries in the DB. I would assume we have your permission to use the images in the DB. Regards! Note, I've attached a larger view of the DB image.