
These are the clues (at least one is right):
1. Austria.
2. Art.
3. 2000.


Moderators: AMark, Canada stamper, Volunteer Moderator Team
/RogerEThe stamp shown belongs to at least one of the following
categories, represented by the previous challenge, namely:
1) United Nations;
2) Issued 1968-69;
3) Theme: Art
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