Important authenticity features are the black (not metal) thread on the cap as well as the correct platinum-trim colour instead of an overly yellow-gold tone. The warranty card of the Verne is typically issued for a set, which is why this point alone is not yet a counterfeit indicator. A stamp of the responsible Köln fountain pen office speaks for an original, as does a long-standing reputable seller history. Picture displays can appear distorted depending on the monitor, so reputable sellers and complete papers are more meaningful than pure colour impressions.