Age: 1956 - 57
Shipped with "cokes"
Shipped with 1/2" target hammer and trigger. Micrometer rear sight.
Without seeing it I think you got it at a good price. Much better if it had the cokes.
I don't know if S&W will reblue it or not. The general consensus around here is that rebluing will decrease the value of the gun by the amount spent on rebluing. Most folks would say leave it alone and let it's "experience" show. You might want to try some 4X steel wool gently on the rust.

Jeff