Foreign Currency Identification Help
 

Are there any currency collectors here?

While sorting through family photos and memorabilia I found an envelope of old Japanese currency that my father-in-law had. For context, he was in the US Navy at the very end of WWII and the early part of the occupation of Japan. I'd like to identify them for my wife.

I am looking for websites, discussion groups, or social media pages that can help me identify what they are. I tried using CoPilot AI and it told me that the first note, which was clearly labeled 1 Yen, was a Mexican 10 peso note. When I pointed out that it was clearly Japanese currency, CoPilot told me that it must have been scrip that circulated amongst the Chinese immigrant community in Mexico. So, any direction you can provide would be greatly appreciated.

Here is that diez peso note.

Attachment 677045

Lots on eBay for a few dollars each.

https://en.numista.com/203393

US currency used to pay members of the military. I this case, in yen so they could be spent in whatever business would accept it.
There was probably some mechanism where the locals could exchange it for their own currency, but if I knew about it I've forgotten it.

During the war they used regular dollar denominations. The benefit was that if a bunch was captured the series could be cancelled and new notes issued. Something that couldn't be done with regular US currency (except the Hawaii notes which never needed to be cancelled )

Also known as Allied Military Currency (AMC) used in occupied Germany and Japan, for example each occupied zone in Germany by the Allies was designated by the first number 1=US 0=British 00=French, the Russians printed their own being similar.
The AMC currency for Germany was printed by Forbes Lithographic for the US, British & French