The Fisher Space Pen is an American Brand. In 1954, its founder Paul C Fisher invented the Anti Gravity pen for use in space missions. All space pens are handcrafted and able to write in zero gravity with the ability to write in any angle or direction, under water, over grease r any surface or in extreme temeperatures of -30 F to + 250 F ! their refills are completely leakproof and designed to last 3 times longer than average pens. Look up their Infinium pen that needs no refilling for a lifetime! All purchases made from William Penn comes with a cerrtificate of guarantee & authenticity.