RAHatto, the poster is talking about a Dan Wesson not a Smith and Wesson. The cylinder release is different and located in another place. Also nothing is stamped in the crane's recess on the frame.
Bugs it's probably a M15 (if it's blue) or M715 (if it's stainless) if it has adjustable sights and a medium frame revolver. If it's a fixed sighted version then it would be a M14 or M714. The barrel should be 6 inches if it's one of those and the barrel would be interchangeable.
There is also a large frame .357, the M40 or 740 Supermag that chambers the .357 maxium.
Quality generally runs with where they were made. The early models made in Monson are quite good. The Palmer models have been known to have issues. The latest models made in Norwich are said to be as good as the Monson models.
Value has always been underated for these revolvers. They are quite strong and extremely accurate. They generally have a poor resale value, but lately the prices has been on a slow rise for those that know them.