If its one of the earliest ones, it will have stainless rear sights. The S&W Catalog says they are worth $100 more, but of course that's depending on the buyer. A collector may give more, but a shooter wont as they create glare in the sunlight. I'd say in this area, real nice in the box with nice Original Target Grips would be worth $650-700 depending on the sights. I have a no dash that is real nice with beautiful Target Grips and the Stainless Sights but no box. I sold it once for $675 and got it back in a trade. I believe it would still fetch $675 even though the market is soft. Don't see many with the stainless sights.