I assume they do not, but read a reference to the contrary . . . .
certain ladies' watches.
In the past however VC did use quartz also for certain men's watches, the last time in was for a time only Overseas discontinued in 2004.
How odd -- is that commomn among the "Big Three"? I had not heard of that before . . . .
they use quartz movements at all?
Yes both PP and AP use quartz movements for their ladies' timepieces, Patek being the biggest user of quartz movements among the 3 due the high production numbers of the 24 model.
Yes and that it is so widespread . . . though I suppose it makes sense with the size constraints.