Be careful buying well used revolvers like these on gun broker. Most retailers these days that put these up, typically taken in on trade, have no idea what to check on a revolver other than the trigger pulls, the cylinder spins, and the hammer falls. Secondly, stainless revolvers are exceptional at hiding abuse because the only finish is the polishing job at the factory.
Check out gunblue on YouTube, he has a video or two on inspecting revolvers. Be sure to make contingency arrangements with the seller in case the piece arrives with issues. Based on those photos I'll say this- it appears that it was quite roughly handled by its previous owner(s) and not particularly well taken care of. You are going to want to immediately inspect the pistol for cylinder endshake, double action timing, check the cylinder notches for abuse, inspect the hand, the bolt, check for hammer push off, inspect the ejector rod for warping by depressing the ejector rod in multiple rotational positions of the cylinder. Check the star for damage, inspect behind the star for the conditions of the alignment studs, and check the crane for forward slack or warping.
I know a lot of revolver guys will praise these pistols for their durability but it's only true to an extent. While revolvers can be shockingly durable when they do fail they fail in spectacularly and dangerously ways. With all that said it *is* a smith & Wesson so based off my experiences with these there's a very good chance it will show little functional defects. I have a 120 year old 1903 Hand Ejector 1st Change that has finish issues but the action is in better shape than any other revolver I have.
