Hello.
I can’t help, but I’m ready to pay attention to the fact that it’s not the screw that is missing, but the entire decorative overlay for attaching the rotor.
Of course, ZF/XF models with 7750 under P.9010 are not produced for a long time, but TTF decoration for P.9010 models looks very similar. It is unlikely that TD will help, I would look for a movt donor. Not infrequently, people put swiss 7750 on such models, and for models with a solid caseback, putting the decoration back does not always make sense. They can become a source of such.