A locking mechanism for an embosser stamp in which the embosser stamp has an operating lever for controlling movement of the seal or embossing plates. Holes are disposed in the sides of the embosser stamp and through the operating lever. When the holes in the operating lever are aligned with the holes in the sides of the embosser stamp, a locking rod is placed through the aligned holes. Movement of the operating lever is restricted when the locking rod is inserted through the aligned holes. One end of the locking rod has a stop mechanism and the other end has a hole for receiving a lock.