I bought this Black Powder Remington 1858 Revolver at an Auction. There are no manufacturers or proof markings on it. The Navy Arms logo and Black Power - made in Italy - .44 Cal. are stamped top and side of barrel. There is a three digit number and marking (maybe FAP) on the frame under the left grip panel. there appears to be a number 2??? on bottom barrel. The cylinder measures 2.020" front to back and the barrel is screwed in leaving four threads exposed at cylinder discharge. Anyone have the same Pistol ? I have a feeling this dates back at least 25 years.