It is possible I miss the place but: what to do with the dial, bite by the time, to restore it. What do you do, where you go, to whom, what was done, how, how expencive? I mean small spots, not big demage.
In the meantime you can look here. http://www.vacheron-constantin.com/en2/services/our-commitments-1
in the end, someone at Vacheron will need to see it. If you can, a service center is your best place to start. If that is not possible, you will need to send it in to Vacheron to be assessed. There is no real way (that I know about) to estimate a restoration without it being seen.
it is best to leave it alone. If it really bothers you you can have the watch sent to VC who can refresh the dial
Yes, the "new" dial (or polished case) on a vintage watch looks unnatural. It is only to do for realy destroyed one. I was asking not for VC only. Generaly.