What Country As Eyr As Its Currency?

Thank you

Iceland

The eyrir was for many years 1/100 of an Icelandic krona.

On some early stamps, this value was shown as "1 EYR."

Is that what you had in mind, or do you have another answer?

Well I learnt something today.
I always knew them as "Aur"

The nominative singular is eyrir, and the nominative plural is aurar (full declension here for grammar geeks). The form eyr, which is the root without any grammatical ending, cannot exist as an actual spoken word in Icelandic and must be regarded as an abbreviation, just like the forms aur and kr that appear on other stamps from that era.

eyr. = eyrir (singular)
aur. = aurar (plural)
kr. = króna (singular) or krónur (plural)

Thank you everyone! That stamp is the exact one I have! As it just said Island I wasn't sure. Very much appreciated!