I saw that same revolver at SEC. It was priced at the BB value for one in 100% condition. Fire it once and condition drops dramatically--the BB shows the value of one in 98% condition to be one third less than the 100% value. Similarly, dry fire it too much, cycle it too much or just scratch it and the value drops dramatically.
If I recall correctly, it had the 2 piece blue box with the VPI paper and brochure. I don't recall if it had the accessories/tools in the plastic bag--if it did, don't open the bag. The box, papers and tools add to the piece's overall value.
I think the revolver was designed by S&W primarily for a foreign police market in the early 80's--it was discontinued in '85 because no one was buying them here in the US--everyone was buying 9mm semi-autos.
I believe S&W holds (or held) a patent on the revolver's extractor system that allowed the shooter to forgo moon clips--you could just drop in rounds and the special spring-loaded extractors would eject the empties. I think the fact that S&W doesn't use the system on its' .45 and 9mm revolvers today says a lot about the development and use of moon clips over the past 30 years.
It wasn't in the display case today, did you buy it? If so, you've got a nice collectable piece. If you want it to hold its' value, don't shoot it and/or don't cycle it too much. That ring around the cylinder is one of the main condition issues that can drive a piece's value down.