Rare 1942-43 Nazi Puppet Goverment of Greece - Etat Hellinque or "Greek State"

Recently acquired this fabulous and uncommon Greek State wartime travel document to an 18 yo traveling to Germany and Hungary. Note in one of the images "flughafen" stamp on the 3rd and 4th images - which means he flew from Athens to Berlin! Very limited air travel during this time. Nice document - have not seen one in all my years of collecting.