Famous Postage Stamps by Country

Can you name the countries in which these stamps were issued?
The thumbnail depicts the most valuable stamp of the world, the "British Guiana 1c magenta" which is worth 9 480 000$.
Click an image to see a larger version and for attribution
Quiz by Nathaniel
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Last updated: April 22, 2020
First submittedApril 22, 2020
Times taken14
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First stamp
First overprinted
Only 1
Split stamp
First tricolour
Most valuable of its country
First of its country
Wrong colour & only 1
20 in existance
Upside down
First of its country
First of its country
Commemorating self-government
Rarest of its country
Rarest of its country
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