Just picked up a model 57 22lr, was not familiar with this model but liked the looks of it and took a chance at $175.  It’s solid condition with 4 digit serial number (ca. 1927), the only problem I find is that the magazine is not marked Winchester.

Don’t know or understand grading system but guessing it’s 75 – 80% (other than the incorrect magazine).  Bluing is deep & rich looking with very little signs of wear.  Has very slight speckle of rust in one area of barrel.  Wood is good but shows some minor use marks.  Rifling is deep & barrel is shinny.  All screw heads on rifle are very good condition with no screwdriver marks.   

Question – Anyone have any info on the Lyman sights on this rifle such as how are they adjusted?  What is the lever on the rear sight used for? 

It has fold down globe (with thin post) front sight showing a bead in the down position, also has a fold down rear sight on barrel in addition to the receiver mounted Lyman rear peep sight (Lyman rear sight is more like a ghost ring than a peep).  Barrel & receiver has two sets of screws for scope mounting option.

I bought it because I like old decent quality firearms & intend to shoot & enjoy this rifle then pass it on to my son someday.  

Unfortunately I have yet to locate much about the model 57, any comments or info would appreciated, thanks!!!