PARKER Duofold Senior Rare Fountain Pen blue Lapis Lazuli year 1930 Gold Nib EF, in Excellent Condition - Etsy
Parker Duofold Centennial Marbled Blue Fountain Pen - Chatterley
Amazon.com: Parker Duofold Centennial Fountain Pen Prestige Blue Chevron Medium Solid Gold Nib Black Ink and Convertor Premium Gift Box : Industrial & Scientific
Parker Duofold MK I Centenial Size Blue Marble Ballpoint Pen – The Pleasure of Writing
Parker Duofold, International, Blue. Rollerball
Parker Duofold Centennial Collector's Edition Fountain Pen (1987) - Blue Marble, Medium 18k Nib (Near Mint in Box, Works Well) - Peyton Street Pens