The "Mechanical Skate Board" is a plastic wind-up toy from Taiwan. There is no date but judging from the artwork on the box this guy must be from the late '70s / early '80s. When wound-up #88 will move forward propelled by the 2 large blue wheels in the center of his board while his arms oscillate constantly. Periodically a piece will raise him slightly on one side causing him to spin around somewhere between about 180 and 360 degrees and start him in a new direction. Unlike the last wind-up figure on BPA, this guy has his wind-up knob located a bit lower so it comes out of his legs.