Early paper money from British Colonial America
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The Rupee was used throughout the Indian subcontinent, East Africa and Middle East wherever the British had some sort of colonial presence from the mid 1800s till after World War I.
[1] https://en.wikipedia.org/wiki/British_currency_in_the_Middle...
[1] https://www.reddit.com/r/TrueReddit/comments/22c5sp/one_curr...
To counterfeit is DEATH
How prevalent were counterfeit notes in this period vs now?