The Vacheron Constantin 4072 was produced in a number of different case materials, though here I am focused exclusively on the all-steel (including crown) 4072. I have not measured these personally, but we see early pieces (-273534) listed at 33mm, and later (273541+) pieces at 34mm. Lugs are all downturned.
There is scattered information on production of each material/movement, which I am including below. If you have additional information on the number produced of each, please contact me. I am continuing to search for additional data.
Cal 13″ V295:
Yellow gold: 24
Cal 13″ V434
Pink gold: 252
Gold: 285
Cal 13″ V492
Yellow gold: 214
Vacheron Constantin does not provide this breakdown publicly.