This is a 38 centerfire First Model single action also know as a Baby Russian for the lug below the barrel just forward of the frame. It retains 87% original nickel finish and has a very good bright and shiny bore with strong rifling. The mechanical function is very good crisp and tight. The numbers all match including the grip. The serial number is 18818 and was made in the second year of production. This is a 4” barrel.