I recently picked up this super little small ring Mauser 7x57 at an auction but have no idea who could have built it.
Overall, it is very well done and I hope some of the styling cues may help identify whom the smith could be.

One of the first things that caught my eye is the convex edge of the cheek piece. Seems like a lot of effort to get that right.

Then, the little swath behind the grip cap - nice touch which I have seen before but just can't recall on who's work.

Nicely done butt.

The shaping around the bolt release is nice as well.

The work around the port is good but maybe the least special on the rifle.

In the metal, the bolt has been nicely shaped and checkered.

The front sight is distinctive - sort of a modified Holland & Holland theme with that little radius at the rear.

Overall inletting is quite nice too.
Not much to criticize anywhere!

Regardless of whether I discover the maker, I am super happy with the $1500 hammer price on this lovely rifle! Can't wait to get her running.