Stationery, artists' materials (other than colours or varnishes), paint brushes, pencils, pencil sharpeners, leads for pencils, pencil sharpening machines (for office use), pencil protectors, pencil cases (not of precious metal or coated therewith), penholders (not of precious metal or coated therewith), erasers, writing materials, drawing sets, drawing materials, drawing chalks, crayons, ball pointed pens, ball pointed pencils, refils for ball pointed pens and ball pointed pencils, and fountain pens and parts thereof included in Class 16.;