A mark is defined as any blemish on 
        the front of the poster caused by pens, markers, grease pencils, regular 
        pencils, crayons, or any other type of writing device. 
    
    
      There are a number of options available 
        when repairing marks on posters, depending on whether the marks are old 
        or new.
      If the mark was made by an older fountain 
        pen, an ink eradicator may be used to remove it. Ink eradicator is a type 
        of bleach - when the mark is removed, so is the color. Thus, the area 
        where the ink eradicator is used would have to be colored back in. 
      If the mark is the result of indelible 
        ink or a ballpoint pen, it cannot be bleached out. The marks would then 
        have to be removed by a professional restorer. 
      Pencil marks can be removed with the 
        use of a yellow brick art gum eraser. The art gum eraser is very soft 
        and crumbly. Regular pen and pencil erasers will not only remove the mark, 
        it will also remove all color. A REGULAR PEN OR PENCIL ERASER SHOULD NEVER 
        BE USED TO REMOVE ANY TYPE OF MARKS.
      Since removing marks from the artwork 
        of a poster almost always results in the loss of color, it is recommended 
        that the removal of marks be done by a professional. 
      For this type of procedure, be sure to 
        have a good restorer:
      Here are LAMP Approved restorers:
      
        
          | US 
            Restorers  | 
        
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                | California | Washington |  
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                | Texas |  |  |