8.5" long tin litho unmarked but made by Marx in 1920's. Beautifully designed toy with realistic graphics. When wound with supplied key, toy works and moves side-to-side with life-like swimming motion. Light wear in the form of paint nicks mostly evident between the segments where they would rub against each other. Last segment of body before tail has .5x.75" area of light oxidation. Fine/VF. First we've seen.