In 1990 Parker introduced the Parker International, a slimmer and shorter version of the Duofold Centennial, which was followed by the Duofold roller ball.  The ball pen and pencil consisted of a brass tassie design and utilized solid blocks of hand-cast acrylic trimmed in 23K gold plate.  It proved impervious to wear due to its diamond polished luster. You can have a pristine sample of this one right here. 18Kt gold nib, converter or cartridge ink feed mechanism, pen never inked, brand new.