Another marvel ( if all correct ): Vacheron Constantin Turler Ref 4301.
35 mm of pure class, from the 40's or 50's. Credit: Not sure, but if my memory serves me well: Ancienne. Best, Nicolas ...
I have little issue with patina
Some types of patina are perfectly acceptable, and this is a good example. It's pretty heavy, and includes spotting, but it's honest ageing and not "damage". I separate the two by incident. If it gets wet, damage, if it lays in a drawer and tarnishes over...