The 3913TSW and 3914TSW are my personal favorites of all S&W 3rd generation semi-autos and I tend to keep an eye on the listings when they come up for sale. They tend to go quickly and bring a good price. If you pistol is the model that is generally referred to as the pre-rail model, which has the shorter grip with the 7 round mag, they seem to come up for sale a bit more often, at least on the sites I watch, but still bring a good price. If you have the 3913TSW with the 8 round mag with the slightly longer grip, but has had the rail removed, those seem most in demand, whether with the original rail on or removed, again at least on the sites I watch. Maybe someone that watches different sites will have different thoughts on that.
Either way, you should not have a problem selling it, if that is what you are looking to do.