S&W .38 special ctg model 10-5 serial number D368xxx
everything i have read thus far indicates a year of 1967-77 however when i registered the gun the only other previous registration was 1953. It does have a tapered barrell and half moon front sight and has a square but. Any help would be greatly appreciated my father recently passed and he always was curious but never did anything about it. I know he aquired this handgun when he was a police officer in 1981 but thats all i know about it.