Never occurred to me but I guess you can literally just change the dial. How does anyone have one of these - Patek doesn’t sell those dials individually, do they? And I’m guessing Patek wouldn’t ever change a dial for someone?
Patek would change-out a dial. It was expensive and ( in my experience) they would not let you keep your original dial. Nowadays, I don’t think they will work with you in that regard.