.38 Special. 4" barrel length. SN: 644085. Blued metal finish with casehardened small parts and mounting walnut Smith & Wesson medallion diamond checkered grips. Double action hand ejector six-shot revolver with topstrap notch and forged half-circle front blade sights. Serial numbers match on the cylinder, barrel, star extractor, and on the inside of the right grip panel. Further markings include Smith & Wesson monogram trade mark to the left frame and MADE IN U.S.A. to the right. Assembly number to the inner frame and crane reads 46632. Barrel flanks show standard make and caliber markings while the top of the barrel is marked SMITH & WESSON SPRINGFIELD MASS. U.S.A./PATENTED FEB. 6. 06. SEPT. 14. 09. DEC. 29. 14. Hammer is struck REG. U.S. PAT. OFF. on the back of the hammer.