Tetradrachm of Alexander with the head of Heracles on one side, and Zeus with sceptre and eagle on the other. Athens Numismatic Museum. (From Macedonia, 4,000 Years of Greek History and Culture, Ekdotiki Athinon, p. 125).
The agreement of the Congress of Cotinth in 337 B.C., when the leadership of Philip was recognized, and which was the materialization of panhellenic unity. Preserved in a fragmentary inscription from Acropolis. (From Philip, King of the Macedonians, Ekdotiki Athinon, p. 138).