To me it ruins the dial So I would pick an older reference Among these 2 probably the guilloché…. While both are nice ( well without the spiral ) guilloché is just more typical for breguet
The weird spiraling red tachy scale looks spectacular on the flat white surface, but looks weird and disjointed on the guilloche dial. That doesn't go for every reference, though! As fabulous as the enamel looks on the 5177, I went with this instead: ...