Manufactured from 1927 to 1941. Blade front and 1,000 meter tangent rear sights, with the "P in shell" proof on the right side of the barrel, chamber and frame, "helm/X" and "star/F" on the right side of the frame, and the three line Astra address and patent date on the side plate over a set of Chinese markings. A large ring hammer is present, with niter blue safety and trigger, and a set of matching numbered 12-groove grips.