A tricky one JimJam,
2 clues : IEF = Indian Expeditionary Force
8 annas = Indian Currency.
Gibbons still tricks you, and places it under Iraq

Section 2 Issues for Mosul
Type 1 opt
SG 8 (1919) Turkish fiscal stamp opt
CV=GBP 5 (1990)
Thanks for the image, I have never seen these before.
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IEF India opts and Iraq opts Mesopotamia (Not Mine)
Cover
