I've written up a nice page full of the history of early Chinese banknotes and how to tell fakes from real ones. It has a nice section on Communist Chinese Banknotes, Japanese occupied territories, and Nationalist banknotes. http://www.edepot.com/banknotes.html I hope it helps people who do not know much about Chinese banknotes so they can get started on collecting them.
Edepot, you might be interested in this thread, though it's not specific to forgeries: http://www.cointalk.com/t144927/
