Issued in 1979, this commemorative stamp marks the 200th anniversary of the martyrdom of Saint Kosmas of Aetolia (1714–1779), an important Orthodox missionary and educator in Greek history. The design depicts the saint in traditional religious iconographic style, holding scripture and blessing the faithful, symbolizing his role in spreading education and faith during Ottoman rule. Printed in rich earthy tones, the stamp reflects Byzantine artistic influence common in Greek religious issues. This issue is valued by thematic collectors of religion, saints, and European cultural heritage. A notable modern Greek commemorative with strong historical significance.