Because they were used on board US naval vessels. During the late 1940s, Dutch troops fought against the independence movement in the Dutch East Indies, now Indonesia. The Dutch began evacuating their forces in 1949-1950. At the same time, US troop ships were being used to transport Displaced Persons from refugee camps in Europe to Australia and New Zealand. The Dutch asked the US to assist in the evacuation since these ships would otherwise be heading back to Europe empty. These notes were used on five of the ships: (1) the General Stewart, (2) the General Black, (3) the General Hersey, (4) the General Mac Gray, and (5) the General Sturgess.
Cool thread ! Thanks ! Yet again shows how numismatics is tightly coupled with history. Informative. Any time I see a foreign language, it's fun to look for words similar to my own language, such as : "aan boord", "tien", "courant (currency, I suppose)", "Amerikaanse", "Nederland", "Ministerie", "Mei"... And some which are a little more stretched. I suppose "geldig" is "valuable". Maybe connect them using "gilded" and the Dutch "guilder", Dunno.
you certainly do have some historicaly imprtant notes!! its cool you share them with us, otherwise i doubt i would have ever seen any of the notes you posted so far