Based on a report from 1436, this sapphire ring can be traced back to the possession of Duke Ernst the Iron (1377–1424). It is therefore considered the oldest, clearly identifiable object from the medieval treasury of the House of Habsburg [1715×1139]

Based on a report from 1436, this sapphire ring can be traced back to the possession of Duke Ernst the Iron (1377–1424). It is therefore considered the oldest, clearly identifiable object from the medieval treasury of the House of Habsburg [1715×1139]

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