UNESCO issued Set of Medals, 1978. In Memory of the 2300th Anniversary of the Death of Aristotle. By Max Léognany. Paris mint. Gold. 23 mm, 7.5g; Silver. 41 mm. 38.47g; and Bronze. 60 mm. Head of the philosopher left. Reverse: Athenian owl, map of Greece with a radiant star at Aristotle’s birthplace Stagira, quote in ancient Greek “The energy of the mind is the essence of life.” Uncirculated. (Set of 3).