What I used to carry down in the land of Mananna. These are great guns! The work fine with .38 Auto but they are 9mm largo. I fired thousands of .38 supers in mine (Aquila brand) but the experts say you shouldn't. In an emergrency 9mm Luger or Steyr seems to work ok! But you shouldn't! I bought federal Ordinance stainless barrels for mine and put in new springs.These guns were made from early 50's to later 70's. You number can be traced, I think it is 1970. I like these guns, and while mine is retired, it did it's job and I trusted it! The markings on yours puts it in the $400 category IMHO