That is a very nice gun. Win 52 were top of the line benchrest guns in their day. Many still shoot them in local club competitions with impressive results. They are no longer competitive at the national level.

Check out the Win 52 forum on Rimfire Central.
http://www.rimfirecentral.com/forums/forumdisplay.php?f=265
There are some real experts there. Some one may recognize that engraver.

When I got interested in rimfire benchrest, a Win 52 was on my list. At 50 yards, with match ammo, a 52 will shoot 1/4" groups if you can dope the wind. Finally purchased an Anschtuz 64.

Pete

http://www.damascus-barrels.com/Movie.html