I was also thinking about the 5070. But the “discrepancies” between case and movement are much bigger on the 5070. This Minerva Chrono has 40 mm case and I cannot figure out the diameter of the cal 13 21-maybe someone can?
The 5070 is 42 mm and the CH 27 70 movement 27.5 mm. Some gap to cover.
I also love the 5070 for that exercise in minimising that gap with design features that now makes it a very unique work.
But I still think it is horological laziness balanced up with a unique design tour the force from PP.