Rare JOHN HANCOCK CARTRIDGE FOUNTAIN PEN - 1920s BOSTON - ring-top  -  This is a rare and unique for its time John Hancock Cartridge Filling pen,  Boston, 1920s, The pen is a black hard rubber ring-top with toning or fade to much of the pen  -  there are no chips or cracks and no personalizations. The cap imprint is beautiful with script John Hancock and Cartridge Pen  John Hancock Pen Co  Boston. The pen has a wide Gold Filled band and cap top with ring. The original John Hancock Boston signed nib is a 14K Gold Medium with good iridium, considerable flexibility and generous tine separation. I dont know much about the cartridge filler - I seldom if ever have seen this pen before. rare - all our pens are sold as acquired from local estates, Untested  -  buyer pays 8.50 safe bubble shipping and tracking in USA