This 3 1/2 inch barrel, no. 1 1/2 S&W Revolver is serial number 3029.  It was manufactured in early 1865.  A few of these may actually have made it into the hands of troops in the latter stages of the Civil War.  The gun has about 35% blue, mingling with a light, freckly rust and rosewood grips.  It has good barrel markings and functions nicely.  Significantly, it is marked B. Kittredge & Company, Cincinnati, O on the left side of the barrel.  This is a fairly scarce marking for a Smith & Wesson made in 1865.  Price $1,750.