Bexley made Chatterley Pens Imperial II. Made out of Swirled Blue Hard Rubber or Ebonite. These pens are limited and numbered from 1-10. they are capable of being used as an Eyedropper or Cartridge/Cartridge Converter. The nibs are made out of 18K Solid Gold and available in Fine, Medium, Broad and Stub and your choice of Gold or Silver trim.