S&W 4" Nickel 29-2 I picked up a few years ago. It was trashed when I bought it. Could barely open the cylinder, it was so filthy. I paid a pretty good price for it but thought I could get it back to a pretty good state. Took it apart, cleaned it thoroughly and then polished it with Mother's Mag and Aluminum Polish. Probably paid too much for it, but came out pretty nice when done.