I can't believe none of you recognized it...
That is Heinrich Himmler's personal Jet Pilot Samurai Survival Sword. It was personally awarded to him by the Emperor of Japan for successful completion of the Royal Japanese Jeet Kune Do class held in the gymnasium on the Royal Japanese Castle in 1907.
Himmler lost the knife when his Starship named Jefferson after the famous Russian Playwrite, sank into the Indian Ocean after splashdown at the end of his historic mission to the moon in 1944 with the famous Italian Astronaut Luke Skywalker.
The knife was thought lost for many years, until the 1953 mission to raise the lost Starship was ordered by Hitler for propaganda purposes.
Jeeze... don't you guys know your history?