This is a customized Parker 51 Vacumatic double jewel fountain pen parts made with an argentinian prototype lucite in dark grey color. It has gold filled tassie and comes with a nice dark grey blind cap top jewel. It includes section, barrel, blind cap and cluth ring. It has not got nib, nor feeder, nor filler system, nor cap. This pen parts has never been used. As you can see in the picture, this pen parts needs the finishing polish. This is a very interesting item to have. It was made on 90`s.