Nice Model 19-3. Yes, it was reblued at S&W in August of 1979. Why was it refinished only 3 years after assembly? Good question, but no answers, I could guess that something bad happened to the finish, maybe some rust or exposure to vinegar or something similar that damaged the finish. There might have been a blemish in the original finish and the owner sent it back to be corrected. Only the original purchaser would know for sure.