You gents have been incredibly helpful and I sincerely appreciate you taking the time to give me this great info. This belonged to my grandfather, a WWII and Korean war vet who had an amazing collection of firearms and who took care of them like they were his children. Most of his collection remains in storage in Nebraska (much of it is 'one offs'), but in terms of S&W I have this revolver and a S&W 1000 in amazing condition. They're my absolute favorite pieces just for their usefulness. Thanks again!