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oon thereafter Tebbel made another order for even more red pens.He now proposed to Parker that they should incorporate the "Duofold", as he called the new pen, in the regular line, selling it for .The De Luxe came with either 14K solid gold or 12K gold filled bands.y 1922 Parker still offered more that 150 different models of pens and it was suggested that the Duofold should also be offered in the colour black.n february the Duofold was also offered with an optional gold girdle, a cap band.This feature initially cost extra, no doubt a strategy to allow the cleaning out of old stock.There was also an un-catalogued pen called the Long Junior, or Special, offered.
n 1922 two smaller pens were added to the line, the Junior and the Lady Duofold.
So in 1923 the black, bandless Duofold was introduced.
Models were offered in both plain and chased finishes.
The first Duofolds was, save the colour, identical in size and appearence to the Lucky Curve #26 and came in one size only, later referred to as the Senior Duofold. Very quickly this unusually large pen was nicknamed "Big Red", a name that still survives among collectors. From the top: A bandless Senior in red, a Senior in non-production Pompeiian Brown, a Senior in Mandarin Yellow, a Senior in Lapis Lazuli Blue with white specks, a Senior in transparent bakelite, a Junior in experimental Bronze and Gold, A Senior De Luxe in Moderne Green and Pearl, a Senior Imperial or De Luxe in Moderne Black and Pearl, a Senior in Burgundy and Black, a Senior De Luxe in Moderne Pearl Green and Black aka Sea Green Pearl, a Senior in experimental Pearl Blue and Black.
Three English Valentines: Lined Green Silver and Burgundy, Lined Rose Silver and Burgundy, Lined Cream Silver and Brown. A 1930's streamlined prototype in Green Tiger Stripes, A Lapis Lazulii, a Yellow with black veins (only three items known), bandless red hard rubber De Luxe.
he Duofold is the pen that actually made the Parker Company one of the greatest pen-manufacturers of the world.