9mm Luger, 3.9″ barrel, toggle semi-auto action with detachable magazine. Marked “ERFURT” on the toggle and “1917” on the receiver ring. Finished blue overall with straw polished trigger, takedown lever, and safety. Checkered wooden grips. In very fine original condition with much of the original blue remaining. Excellent bore and mechanics. All matching numbers with the magazine unnumbered.