The obverse reads, "Constantine King of the Greeks" and the reverse says "Kingdom of Greece 1 Drachma". Greek is my second language. Greece was no longer a kingdom after the military coup of April 21, 1967, so this was one of the last coins with Constantine I's likeness on it. A bit of trivia about him...he's the only head of state to win an Olympic gold medal during his reign (1960, Rome, yachting).