Believe there are worse finish challenged S&W revolvers out there. Inusuit,
had a great first step in "I'd use a fine buffing compound to remove as much of the existing surface discoloration as possible to get down to bare metal before starting with the cold blue." Once you get all traces of the old finish removed you have a blank canvas. Me, I de-grease it with Acetone, then one or three times apply some wax and buff. You may be surprised at how well she looks. The suggestion to wear gloves to keep oils off is a great one. I use the el-cheapo white cotton museum gloves when buffing. Don't be extra frugal like me and buy more than one pair. You will thank me later. They can be had from Hobby Lobby or Amazon.
Good luck, hardcase60

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You want me to do what?