Original cardboard box w/illustrated lid contains 12" long tin litho and hard plastic friction toy made in Japan by Toymasters. 1950s. Truck features tin litho cab and body, compressor unit and features three translucent compressor covers and hard plastic "Concrete Mixer" unit that revolves, small plastic pieces visible as they tumble within half translucent mixer. Mixer has hand lever to dump. Friction mechanism works, compressor units pump and mixer revolves as truck progresses. Neat actions. Some scattered aging but o/w Exc. Box lid shows corner/edge wear and has some paper tape reinforcement to interior of box bottom. Fine overall.