Abstract: A tamperproof coin box closure for use in the coin mechanism housing of coin operated washers and dryers to receive coins from a vertical coin slide. The closure comprises in one embodiment a horizontal plate and a slotted coin receiving member fixedly associated therewith. In a second embodiment, the coin receiving member is pivotally associated. The coin receiving member of both embodiments has slots of close tolerance to the size of coins and is intended for vertical passage of the coins therethrough upon release from a coin slide.