Two Pillar Steel Corkscrew

A good example of a steel frame two pillar corkscrew. The mechanism works fine and there are no losses or breaks. The worm probably has one turn missing but does have a sharp point. The helix central shaft has a locking screw for the worm on one side. Unmarked. Could use a good clean otherwise in good condition. Length 8 inches. English Early to Mid 19th century.