I recently inherited an old revolver that I would like some info on. It is a S&W, top-break, hammerless 5 shot. I believe it is nickel with what looks like mother-of-pearl grips. I assume the serial number is 29771. It is on the bottom of the grip and also on the cylinder, so it may be the assembly number. It is a .38 caliber and the barrel is 3 1/4 inches. It has fixed sights but there is a small rod in front of the rear sight. There is an indentation where you can push the front of this rod down but I can't figure out it's purpose. The safety is on the back of the grip. There is no model number. Hope someone can help some info and maybe it's value. I would say it is in very good condition. Thank you.