Shoot it and admire it
A couple of years ago I purchased this beautiful nickel 6" bbl. 29-2 (ca. 1980) at a local gun show for what I thought was a very fair price. After I got home, I was disappointed to find out (after removing the stocks) that the revolver had been re-nickeled by S&W (frame stamped "R N 1/89"). However, it was an excellent factory re-nickel job, so I don't think it affects the value very much. In your case however, a non-factory re-blue of your much rarer '57 (4-screw ?) .44 Magnum may significantly affect its value. I would leave it alone, shoot it, and admire it. Just my 2 cents.
A couple of years ago I purchased this beautiful nickel 6" bbl. 29-2 (ca. 1980) at a local gun show for what I thought was a very fair price. After I got home, I was disappointed to find out (after removing the stocks) that the revolver had been re-nickeled by S&W (frame stamped "R N 1/89"). However, it was an excellent factory re-nickel job, so I don't think it affects the value very much. In your case however, a non-factory re-blue of your much rarer '57 (4-screw ?) .44 Magnum may significantly affect its value. I would leave it alone, shoot it, and admire it. Just my 2 cents.