Maybe I'm missing something, but isn't that first photo a different gun than in photos #2-4? Look at the lack of markings on the slide in #1 vs. the other photos.
Yes I owned one...the 952-2 long slide (6") in stainless. Most accurate 9mm I've owned in over 50 years of shooting. The long slide (6") are still hard to find. I had a S&W salesman once tell me that even he couldn't get his hands on the 6" model 952. If you want one & find it for sale they normally bring a premium price.