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Primary sourceArtifact1451

Gold Seal of Constantine XI for Ragusa

1451

A gold bulla seal attached to a 1451 imperial document granting privileges to Ragusa (Dubrovnik), issued in Constantine XI's name.

This gold seal was issued in Constantine XI's name as emperor, part of a diplomatic grant to Ragusa.

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Two photographs of a gold bulla seal hanging from a red cord, showing both faces. The left face has Greek inscription lines and a standing figure in a robe. The right face shows a haloed standing saint holding a cross, with a cross symbol and inscription to the left.
Gold bulla of Constantine XI Palaiologos, Chrysobull to Ragusa, 1451. Dumbarton Oaks.

About this source

What it is

This gold seal, held at Dumbarton Oaks, was attached to a chrysobull—an official imperial document—issued by Constantine XI in 1451 to the city of Ragusa, now Dubrovnik. The seal bears a Greek inscription naming him emperor, and shows a standing robed figure on one side and a haloed saint holding a cross on the other.

Why it matters

Even as the Byzantine Empire shrank to little more than its capital, Constantine XI still issued formal diplomatic grants to foreign cities, using traditional imperial seals to assert his authority. This object shows how emperors maintained the rituals and symbols of power even while their real strength was fading.

Look closer

  • What does the choice of gold, rather than a cheaper metal, tell you about how the emperor wanted this document to be seen?
  • Why might Constantine XI want to maintain formal ties with a city like Ragusa so close to the empire's end?
  • What can a seal tell us about power that a letter's words cannot?

This artifact is part of the curated material that grounds the AI version of Constantine XI Palaiologos on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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Constantine XI Palaiologos

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