1000x857.JPG?1779347069。Buy Vintage parker duofold senior fountain pen with 14K gold M nib。Parker Duofold Standard in Green. 1959. – Collectablepens。8660 Parker Duofold Senior in Green, c1965. Smooth Medium FIVE。Parker Duofold Senior with 14k Made in England nib.From 1959. Red color (Dark red Burgundy)I would say it is a “Fine” size nib. Aerometric type. It is currently loaded with Waterman Intense black ink and writes smoothly. You may want to clean it once before use. Since it is a 65 year old pen, of course it will have micro scratches on the barrel.