Issued by the Topps card company, this uniquely designed 36-card set combined sports and nonsport subjects. The cards, each featuring two subjects, are designed with a shutter attached to a tab (the tab reads “Push-Pullâ€), which is moved up and down to display each of the underlying images. To sports collectors, this set is particularly noteworthy as it is highlighted by three cards featuring Major League ballplayers in the series.
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