A stamp includes a printing unit and an actuator unit connected thereto by a connecting element. A printing plate is arranged in or on the printing unit to be moved from a neutral position into a printing position against a resetting force. The printing unit is arranged within a housing, including a support element having a pan bottom and at least one contiguous lateral wall stabilizing an ink storage body for receiving stamp ink. The printing plate is arranged abutting against the ink storage body for accepting stamp ink. The support element includes at least one sealable liquid-tight opening in the pan bottom that can be used to connect the support element to the actuator unit of the stamp and/or which can serve as a refill opening for stamp ink.