Indeed, as Guy says, it’s a recent and fairly common gun. The serial puts it in 1974, so it should be either a Model 10-5 (tapered barrel) or 10-6 (heavy barrel). Both were very popular and widely used by police.I have a 38 special CTG with the serial numbers D664331. How do I find out its value. I'm new at owning a gun, I inherited it.