Had to buy a revolver to shoot practice/ quals while attending LEO Academy in 1987. It was still difficult to find a Stainless model, so found a trade in M10 4in, pencil bbl 38 Spec. It was also worn, but internals looked new.
When I showed up to the Firearms RO, he did a quick check, and told me the revolver will last a lifetime. After shooting a perfect score, I was convinced that it was a "diamond in the eye of the beholder".
The RO knew a local Gunsmith, I received a quote, and had mine reblued. I also had the front sight cut to allow an orange insert. Price was well worth it.(think iirc, was 100.00 for the blueing, 25.00 for the sight work", no springs replaced, and 5.00 for a pair of slightly used(new)Pachmyer grips.
After 8yrs on duty, semi retired to a Glock Duty Weapon, but kept in reserve in my nightstand w/ 2 speedloaders w/ 158 SWHPs. Never felt under armed, but those Glocks carry a lot of rounds vs a S&W M10!
Mine will be passed down to either of two sons. They are on this earth due to my protection offered by that S&W.