So patina is a polarising topic, you either like it or hate it.
For me I don鈥檛 mind some dials with patina but the general rule for me is that it has to be uniform across the entire dial and you have to be able to see all the original details easily.
Patina happens a few ways, 2 of which is water ingress and the other is UV changing the colour of the top coat or varnish.
I don鈥檛 have many like this but I鈥檒l use my Tudor as an example. It鈥檚 creamy across the dial and doesn鈥檛 encroach on details like printing.