Armenia-Portugal joint issue. 150th anniversary of Calouste Gulbenkian
<ul><li>Date of issue: March 26, 2019</li>
<li>Designers: Vahagn Mkrtchyan (Armenia), "Atelier B2" company (Portugal)</li>
<li>Printing house: Cartor, France</li>
<li>Size: 40,0 x 30,0 mm</li>
<li>Print run: 40 000 pcs</li></ul>
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