Over the centuries, many of the same countries which struck ducats in gold also struck them in silver. As was mentioned in the beginning, the very first ducat was struck in silver. They were known by various names such as ducatto and ducaton. They were not always of the same fineness nor were they of the same value. But the name itself had become a symbol of trust and reliability throughout the world.

The Real d'or was struck in the Austrian Netherlands at the Antwerp mint between 1546 - 1556 during the reign of Charles V, King of Spain and Holy Roman Emperor.