Under 10,000 of these David Williamson patent pistols were manufactured by Moore's Patent Fire Arms Company and the National Fire Arms Company in the late 1860s in several variations. They could fire using either .41 rimfire cartridges or percussion adapters. (This example includes a reproduction percussion adapter). This example has a blued barrel with an arrow engraved on the flat top and the Williamson patent marking on the left side. The silver plated brass frame and trigger guard have the standard scroll engraving patterns. It has a blade front sight and notch in the hammer for a rear sight and is mounted on a walnut stock with checkering on the bird's head grip.