It is obviously a different denomination and does not have the script around the edges, but this very similar image shows up as Korean on the site linked below.
Attachment 44895
http://www.numismondo.net/pm/kra/
Whereas this site, when translated, refers to a similar note as being from the Russo-Japanese war:
This information was found using http://www.tineye.com/ to compare your original image with millions of others on the web and track down those that are very similar. From those results you can visit the websites of those images to see what they say about the image.