Abstract: An automatic vending machine, or a slot machine, has a display plate provided at the rear wall of a sample room which is covered by a transparent window panel fitted in a front door of the machine. A plurality of vertically elongate display strips arranged side by side at desired intervals adjacent to the display plate to be rotatable about their own axes. The front or rear faces of these display strips can cooperate with each other to produce associated composite figures, which fully covers the display plate when the display strips rotate together at the same time whereby either the front or rear faces of the display strips take their positions substantially parallel to the display plate. Consequently, the composite display figures formed by the front and rear faces of the display strips can be seen from the front of the machine.