No "chronometre" designation on the dial, but I can assure you that this is a ref. 2515 with a cal. 333 lurking under the hood. If the dial variation looks familiar, that because it is otherwise identical to those used on some other 333 models. I happen to own one, albeit housed in the more common 333 case design, also shown below. Cheers, Tony C.
Nice! Out of the two I prefer the first one, more similarities with the early constellation cases. So it's a Chronometre.
Regardless of what's under the hood, the first one is still a great looking watch with nice patina. DIbs!