These are made with a steel cylinder and and all brass barrel and frame. Norm Flayderman states that these were made by Otis A. Smith and is an American Arms oddity. This is a hammerless D.A. 32 centerfire with a 3” barrel and the is SN 10648. The mechanical function is very good crisp and tight and the bore is bright and shiny with some traces of mild corrosion in a few places. It retains over 93% nickel finish. The grips are very fine plus without chips or damage. This one has the safety on the rear of the frame and was made in the mid 1890s.