Smith & Wesson Model 21-4 Thunder Ranch Special, .44 Special cal. double action revolver.  Serial #TRS1593.  Excellent condition.  4” barrel has excellent bore, wide half-moon front sight.  Barrel and frame have 97% blue with “Thunder Ranch” inlay on right side.  Cylinder is 98% with light index mark.  Contoured wood grips are excellent.  Double action works fine and locks up tightly.  Only 225 of these produced!  Includes S&W hard case.