Translations:Conklin/9/en

This is why in 1921 also Conklin started producing models with a peculiar lever filler mechanism, ingeniously constructed so that only half of the lever was in the open. With the introduction of the large dimension pens trend started by the Duofold also Conklin introduced in 1923 the Duragraph model. The following year the Duragraph was renamed as Endura and the production was converted to celluloid. Initial model were in black or red hard rubber, but soon they were produced in celluloid, with different colors like Rosewood, Black & Gold, Lime Green, Lapis blue and the rare Blue & Gold present only on smaller models.