How old is the armada portrait?

It's impossible to say for certain how old the "Armada Portrait" is without knowing which one you're referring to. There are several paintings with that name, including:

* The Armada Portrait of Queen Elizabeth I: This portrait, attributed to an unknown artist, is thought to be from around 1588. It was created to celebrate the defeat of the Spanish Armada.

* The Armada Portrait of King Philip II: This portrait, attributed to an unknown artist, is thought to be from around 1580. It was created to commemorate the Spanish King Philip II's victory over the Ottoman Empire.

It's crucial to specify which painting you're talking about to determine its age.