S&W Model 66-4. It is .357 Mag. caliber. This was a limited run revolver. It has the 3" barrel with full ejector rod. It comes with Hogue Pau Ferro checkered wood grips (smallish medium). The grips alone are worth over $100.00! It has been carried little and shot little. It has original box and paperwork. I can't find the original Uncle Mike's rubber grips, but no great loss IMHO. Price: $1,200.00.