Harkening back to the golden age of fountain pens, Parker reintroduces the classic “51” design to a new generation of writers. Its rounded, streamlined resin barrel is light in hand and pleasing to hold. The twist-off metal cap has a conical “jewel” top and the iconic Parker “arrow” clip. The vintage-inspired, hooded 18kt gold nib writes smoothly using the included Parker ink cartridge or converter (for bottled ink filling). Parker 51 Fountain Pen Specifications. Edition: 2021 Reintroduction of a classic 1940 vintage pen design. Pen Material: Resin barrel with Chiseled Golden Cap. Clip: Gold signature Parker “arrow” clip. Nib: hooded 18k Gold. Filling System: Parker proprietary cartridge/converter (both included). Pen Length, Closed: 5.55 in. Pen Length, Open (Cap off): 4.65 in. Pen Length, Open (Cap posted): 6.00 in. Pen Barrel Maximum Diameter: 0.43 in. Pen Grip Section Diameter: 0.31 in. 0.39 in. / 8mm – 10mm. Pen Weight: 0.8 oz. This pen is part of the estate of a long time fountain pen collector with a fondness for Parker Pens. The pen has not been used and has been in storage. The pen is in pristine condition. The box is structurally in perfect condition but has a tear in the surface from being labeled (see last pic).