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Byzantine Hyperpyron

Type Object Region Byzantine Empire Time 1092–1300

High-purity gold coin introduced by the Komnenian dynasty's currency reform, its name marking gold content surpassing the old nomisma;…

Timeline

  1. c. 1050–1092Constantinople · Byzantine EmpireFrom the tenth to early eleventh century, the traditional nomisma gold coin was repeatedly lightened and debased due to fiscal pressure and war losses, leaving the empire urgently needing a new coinage to restore the credibility and pricing function of its precious-metal currency.
  2. 1092–1118Constantinople · Byzantine EmpireAlexios I carried out a comprehensive currency reform, replacing the old nomisma with the hyperpyron and issuing subsidiary coins such as the trikeron and miliaresion, rebuilding the empire's three-tier gold-silver-bronze pricing system.
  3. c. 1175–1204Aegean trade circle · Aegean SeaUnder Manuel I's prosperity the hyperpyron still maintained high fineness, serving as a medium for high-value imperial payments, diplomatic gifts, and long-distance trade settlement, forming a multi-metallic Mediterranean currency landscape alongside Italian city-state silver coins and Islamic dinars.
  4. 1204–1300Nicaea · Empire of NicaeaImperial fragmentation and fiscal crisis gradually reduced the hyperpyron's gold content, but the coin's name and the accounting unit established by the Komnenian reform continued into the Palaiologan dynasty, influencing later naming and valuation traditions for Byzantine gold coins.

Sources