Hyperpyron - John III Doukas

John III Doukas Vatatzes ruled Nicaea during the empire's most expansionist phase — steadily recovering Byzantine territory from the Latins while building a surprisingly self-sufficient agrarian economy. His reign is unusually long for a catalog entry to remain vague about: thirty-two years of stable gold coinage is itself a historical statement. The hyperpyron's gold standard had been under sustained pressure since the Fourth Crusade shattered Constantinople in 1204, and Nicaean issues under John III represent the most fiscally disciplined Byzantine-tradition coinage of the exile period.

BCV 2073 spans the entire reign, and die studies have not yet produced a reliable chronology within it.