This fake German passport for Hitler was produced in 1941 by Britain's Special Operations Executive, the spy branch in charge of forging documents for moles, spies, partisans, and other covert operatives, as a proof of concept. In a moment of spirited hijinks, the SOE made Herr Schicklgruber into a Jew seeking a visa to enter British-controlled Palestine.
This passport shows what the forgers were capable of producing. It also hints at their sense of humour and their opinion of Hitler and his beliefs. They've given Hitler's passport a red 'J' (which stood for 'Jew' on a German passport). He has a visa allowing his entry into Palestine, which was under British control at that time. The passport also describes Hitler's occupation as a 'painter'. Under distinguishing features, they list his 'little moustache'.