Abstract: A banknote stack receiving structure is provided in front of a banknote validator for sequentially passing banknotes to the validator in a serial manner. A first drive arrangement engages one side of an exposed banknote and urges the banknote towards the validator. A restrictive drive cooperates with the first drive and a banknote must pass between opposed rollers of the drives to move to the validator. The restrictive drive roller contacts the opposite side of the exposed banknote but may also contact an overlapping banknote. The restrictive drive rotates to feed a banknote to the validator if a single banknote is present and automatically rotates in an opposite direction if overlapping banknotes are present. This automatic direction of rotation is due to slippage between banknotes and overcoming a low torque motor of the restrictive drive when a single banknote is present.