Buy it, You'll like it!
I have a copy of the S&W 651, but it's a later 1992 vintage, and I bought it new.
Back in 1982, the Shooting Times cover for November was graced with a pair of S&W J frame magnums (650 & 651), and I'll admit that I was lusting badly for one.
Took ten years, but I got mine!
Here's My copy: