Howdy Chowder...
I see it's a NM prefix. Nice gun, good find... you'll enjoy it. A few things you may or may not be aware of. Humor me if you are.
If it doesn't have an "idiot scratch" on it, and you don't know what I'm talking about... look it up before you disassemble the gun.
Get some lube on the slide and frame rails, the locking lugs and FLGR. Stainless steel galling is not too common these days, but no point in encouraging the possibility.
Enjoy!
C