Mauser Gurus, What Did I See?

[awp101]

Spotted at one of my local pushers:

 

Tagged as "FN Mauser Sporterized 8x57", no markings that I could find, I don't recall seeing a gas vent at the front of the receiver, where the receiver crest should be was a trapezoidal shape (I think) where the sides came in like this / _ \ (not that steep and maybe upside down from what I posted) and that was filled in with either stamped or engraved fine lines (possibly peened but it didn't feel that rough and I left my glasses in the truck ) and the rear sight was some sort of express type sight. It had one big, fixed rear leaf not quite an inch wide, a very thin folding leaf behind that and possibly one more leaf that may be stuck (or it's not a leaf at all ).

 

The stock has a schnabel forend and is missing a chunk of wood around the rear tang (can't tell if there's a split or not).

 

The bolt was already turned down as well.

 

Asking price is $400.

 

I suspect it's a sporterized mil-surp but the lack of ANY markings and crest treatment makes me wonder if it's a commercial sporter.

 

Any ideas, thoughts or SWAGs as to what it may be and if it's worth the asking price? I'm more interested in building a .257 Roberts but I never know what odd things will pop-up before I get to it or if this would make a good rebarrel candidate.

 

Thanks!