A few years ago Smith and Wesson released a run of Model 37-2 revolvers that were variously reputed to be a contract over-run or "parts guns" or whatever. Regardless they were pre "plus P" frames, mostly with bobbed hammers, with no lock and no MIM parts. They were very sweet little revolver and at a good price. I picked up a couple and haven't looked for anything else since.
Use it up. Wear it out. Make it do, or do without.