Space play money from Japan (1965?)

I blogged in 2013 about some Moon money I had found: http://dreamsofspace.blogspot.com/2013/05/moon-money-1969.html

Here is another set of space play money. It was evidently printed in Japan, and I am guess made for the American market. I don't know if it was part of a game, or sold separately as a toy. I also don't have a firm date but am guessing around 1965-1967.

 The graphics are not very exciting (when you have seen one bill, you've seen them all). But I find these bills to be a charming space toy.