Parker. Duofold Fountain Pen, circa 1951 A vintage Parker Duofold fountain pen, made in England circa 1951, the barrel and cap executed in black resin with gold-plated fittings. Fitted with a gold nib marked “England” and an aerometric filling system, reflecting Parker’s post-war English production and classic Duofold design language. Model: Duofold Type: Fountain pen Filling system: Aerometric Colour: Black Manufacture: England Period: circa 1951 Condition: Very good vintage condition. Accompanied by: No original box. Shipping: Shipped worldwide with tracking.