|       | 
    
       
      Revenue
      Stamp Mutilators 
       
      
       
    
      According to a 1915 product announcement, "In accordance with the ruling of the
    Internal Revenue Department [on the War Tax Revenue Law], all revenue stamps to the value
    of ten cents or more must be mutilated with three parallel incisions, cut through the
    stamp after being affixed to the document. This is in addition to stamping the same with
    the initials of the user and date of use. This legal requirement
      created a demand for devices, known as revenue stamp mutilators, that cut
      three straight or undulatory incisions through both the revenue stamp
    and the document to which the stamp was affixed.  
      The photograph above shows an unmarked cast iron
      revenue stamp mutilator. Attached to the underside of the end
    of the pivoting arm are three parallel vertical steel knife blades about 1
      in length (measured side to side) and
    1/8 apart. When the knob on top of the device is pushed down, the blades fit
    into three slots in the base or anvil. If one inserts papers under the head and pushes
    down, the device makes three parallel incisions. A photograph of an office at the Tradesmen's Trust Company in Philadelphia taken in July 1907
    shows this identical revenue stamp mutilator on a desk (The Hoskins
    Company Catalog, Philadelphia, c. 1910). 
      
  |