I think it just sits really well on the wrist.
I was a bit worried about the size, as im used to PAMs, but it is actually fine, and feels alot better than the Navitimer i had and then sold because it was too small.
I cant find a flaw bar the datewheel. Even the band has screws on every link like the original.
With a new datewheel, this would be pretty much 1:1, and all it would need then would be a decorated ETA 2893-A2 (what cartier call their Caliber 049) which you would never see anyway as it has a solid back.