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Could it be a Stylophone? Below link to picture,
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Each second in time is actually 'made' by lots of men in blue overalls moving each, individual item into the next 'second's' time frame (a never ending blackness until the items have been shifted...

This US movie is set in the midwest(?) during the 1950's or thereabouts.
Opening scene is of a solitary young girl of about 9 years old. She is playing 'dress-up' wearing her older sister,...