Parker Duofold Centennial Orange

Set of four PARKER DUOFOLD CENTENIAL ORANGE fountain pens.
Orange ebonite. Gold finish.
Three of them with plunger loading and one with cartridge loading (the most modern).
They show marks of use and wear.
Measurements: 13.5 cm (the largest).

Parker Duofold is a range of fountain pens produced by the Parker Pen Company. The first model was produced in 1921 and was a large pen. The original full-size Duofold was soon joined by the smaller Duofold Junior, Duofold Special and Lady Duofold. Duofolds remained popular in Europe, were produced in the 1960s in different sizes and shades, and were revived in the 1980s as Parker's flagship offering once again. In 1988 (to celebrate the company's 100th anniversary), Parker launched the Duofold Centennial series of Pens (Nibs, Rollerballs and Pencils). Later, they introduced the Duofold International line with models that also evoked the classic Duofold design, although smaller than the Centennial. There are also differences in the ink feed systems, changing from their push-button filling mechanism to a cartridge/converter system.