The lined barrels remained, collectors usually refer to all lined pens as the "DQ" ever though the later pens didn't have the additional imprint, " Black Line" is also used to describe the model. The Jack Knife Safety pens now disappeared all together and the "DQ" model was advertised as the Parker Black and Gold pens. N 1925 the "DQ" imprint disappeared when the line was yet again re-organised. Soon the line was broadened, a Junior and a Senior "DQ" was added to the line. Initially it was produced in two Lady sizes, the shorter version could be found with either a clip or a ring top. It sported a rolled gold cap band and the hard, rigid manifold nib of the Duofolds. It sold for half the price of the Big Red, $3.50 and had attractive, longitude lines on the pen body. A subtle way to capitalise on the Duofold reputation without actually compromising the name. In 1924 Parker decided to retire most of the Jack Knife line, leaving only a few sizes, and a new, cheap pen was introduced in black hard rubber, the Parker "DQ". Still, it was clear that the interest in the old Jack Knife safety pens was declining. A cheap Duofold wouldn't continue to be the status symbol it had become. It was clear that this would affect the sales of the Jack Knife pens which it also did, and although the Duofold at this time was a growing family in many sizes and designs Parker was unwilling to lower the price. N 1923 it was decided, although many at Parker was hesitant, to produce the Duofold also in black.
This was also financially sound, since the Duofold sold for $7, while most black pens only cost around $3. Already in 1922 the number of models offered had been was reduced and only about a hundred fountain pens and forty five pencils were offered. Since it was instantly regarded as a status symbol, it couldn't differ much from the features that sold it: it had to be big, it had to have a large gold nib and it had to be in red.
When the Duofold saw its way into the production line in 1921 it was for the first time appearant that the production line had to be slimmed down to meet the demands of the public for the Big Red. Every pen was hand made and if a customer wanted a custom made pen, well, that was all right with Parker. The company offered more than 400 models of pens and produced even more. Efore the Duofold era Parker was just one small pen manufacturer among dozens of others in the USA.