these are made in limited quantities, so they are probably not all over the place
In fact all are gold, either PG or WG. Being a sucker for WG, the white/Onyx piece would be my first choice (goes nicely with any dress colour either). But the RG variant does have a warm tone, which i think it will look great if matching the shirt!
The "dial" variants go back on movement finish; the "brushed" version represents the sunrail pattern on the mainspring barrel, while the "perlage" version represents just that. Which both is a nice idea!
These are beautiful!
So don´t miss if there´s a chance to see them in nature