Cal. 7.65mm. 4" bbl. SN 51661. 90% blue finish shows thinning on crisp edges and lower front of slide with rear 33% of slide showing darker blue (possibly from holster), good bore, slide marked P.Mod 37, Kal 7.65 JHV 43 on left side, wood grips show light use, and 1 - 7 round magazine. matching numbers on barrel, frame and slide. Good. 20-896. (C&R) NOTE: Please refer to the terms and conditions of this sale in regards to firearms with high capacity magazines.