1959 Vintage Parker Duofold Senior 万年筆。Vintage parker duofold senior black fountain pen – 14 Karat gold M。CIRCA 1927 PARKER SENIOR DUOFOLD BLUE ON BLUE LAPIS FOUNTAIN PEN F - B。SCARCE CIRCA 1923 DUOFOLD SENIOR RED HARD RUBBER LARGE IMPRINT FOUNTAI。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.