This is a rare 1920's Autopoint Chatelaine Ring Top Mechanical Pencil featuring a continuous twist mechanism and a lead diameter of 1.18mm. The pencil is nickel silver plated and has a lead grade of HB. It measures 3 3/4" in length and was produced in the United States. This vintage pencil is perfect for collectors of pens and writing instruments. Its features and brand make it a valuable addition to any collection. See Photos.