I don’t recall ever seeing something quite like that in Patek. Here is a 3448 from 1978. There is a slight space at the top of the lug. Doesn’t go very deep so vastly different from these new models. Nevertheless, I think this historical antecedent is interesting. I am very curious to see these 2 watches in person, particularly to examine the unusual case construction and the aesthetic appeal (or lack thereof) of the dial texture and color. Best, Patekova