The Quintessenz is a cooperation: design was largely co-determined by Axel Dörrbecker; in particular cap rings and cap top emblem come from him; the nibs were also chosen by him. The technology (especially the striking 2-chamber filling system) comes exclusively from Visconti (Dante). Collectors praise the Quintessenz as a hand-flatterer of beautiful celluloid with a particularly large ink supply — a plus for heavy writers. The writing instrument has proven itself in practice and is recommended further in collector circles.