That's what I thought, too, Stumpjumper M2 or S-Works M2. They were particularly tough to gouge, being metal matrix composite, so look at the area where you'd expect to see chainsuck gouges, and see if it's merely got surface scratching.

It appears not to have the 30.9mm post that the later versions of the M2 had, so it's probably 27.2mm (nominal) and I think that does put it at 1995. On mine, the seat tube was a bit large, and the seat post kept slipping down as a result. I should've gotten a 27.4mm post and called it done, instead of sending it back to Specialized. At any rate, if the post slips down, you may need a super-duty seat collar, and/or a 27.4mm post, and/or some of the grit-paste commonly used on carbon seatposts.