Actually, that's one of my problems with leather straps. Unless the color is totally different, I don't like wearing a brown strap with black shoes and vice-versa.
also the differences in the shape of the continents, eg S America. Makes clear that each 5131 is truly unique. And yours is quite beautiful. Most of the J images I have seen are not as vibrantly colored as yours. In general my impression is that the later...
The dial also captured my eye when seeing it in person at Sotheby’s preview. As you said, it looks quite different from most of the J. Perhaps it’s the later batch of 5131J-014, with a transition of style, resembling the subsequent R version 😊 On the othe...