This Japanese Occupation Money was printed during World War II by an overly optimistic Japanese government. They were so convinced that they were taking us over, they printed up new bills to replace our money. This set of ten 1-1/2" x 3" $10 bills is just the thing to buy if you plan on using your time and dimension ship to travel to an alternate reality where the Japanese won. Just think, you can live like an occupied king! In any case, its a fascinating bit of history.