Found A Japanese 50$ Bill?

Question:

My grandma found this 50$ japanese bill and she is wondering if it is real or fake. And im thinking shouldnt it be Yen so it would be 5000??? Or would there be a 50$ and it mean 500? 5? Please help.

Answer:

There is no "Japanese 50$ bill". Yen is always used in Japan.

This is what carl_the_truth is talking about.
http://ja.wikipedia.org/wiki/%E8%BB%8D%E…

They say that dollar bills were issued in Malaysia during WW2. I'm not sure if they used $50 bills. I found $10 and $100 bills were used. But I could not find $50.