"Banana Money" Set (1942)

"De Japansche Regeering Betaalt Aan Toonder" in 10, 5, 1, 1/2 gulden and 10, 5, 1 cent.

Banana money is an informal term given to a type of currency issued by Imperial Japan during the Japanese occupation of Singapore, Malaya, North Borneo and Sarawak and Brunei, and was named as such because of the motifs of banana trees on 10 dollar banknotes. It was in widespread use within the occupied territories where the previous currency became a scarcity. The currency were referred to as "dollars" and "cents" like its predecessors, the Straits dollar and Malayan dollar.

Source: http://en.wikipedia.org/wiki/Banana_money

Yes, I have banana money in my collection :)