1926 S&W 3rd model. It was probably closer to 95% when I got it but it was made to be used not sit in a safe never to see the light of day or feel the heat of combustion. I hope you serious collectors are pizzin yourselves right about now.
There's absolutely nothing wrong with shooting a gun like that. While I wouldn't try to run Kieth loads through it or use it for a regular IDPA gun, an occasional range trip isn't going to hurt it. As I've said many times before, the only reason I would refrain from shooting any gun I might own would be if the gun were unsafe to fire (in which case I'd be disinclined to continue owning it).
Smith, and Wesson, and Me. -H. Callahan
Well waddaya know, one buwwet weft! -E. Fudd
All bad precedents begin as justifiable measures. -J. Caesar