Looks high quality and gorgeous. I can't find anything via google search. I'm mobile and can't run a reverse image search. I wonder what that would show. I wonder who made them.
Looks like a nice strap, but almost certainly an "aftermarket" buckle. IIRC "acier" and "inox" should be printed as two separate words, and I would think Omega would put them on a bit straighter than that.