Four-piece set is headed up by 7.5" long tin litho rabbit body w/Marx wind-up train mechanism and built-in key. Rabbit has original glass eyes. Designed to run on Marx O-gauge track (not included). Works well, moves forward as back legs move back and forth and bell rings. Rabbit comes w/three 4.75" long tin litho hopper cars that have two different images on sides, including Easter chicks and ducklings w/"Bunny Express" name. Car's platforms are in the three different colors made. Rabbit "engine" and cars are complete w/all couplers. Marx only produced this set for the 1935 and 1936 Easter seasons. Rabbit "engine" and cars have some aging and scattered wear in the form of small paint nicks/scratches. Fine overall.