Holy Roman Empire: flag of 1600

Period: Around 1600, with the Spanish Empire at its height
Held land in: Europe
Accuracy: Approximate: The emperor's banner: the Empire was a patchwork of states, each with its own flags.
Source of the drawing: Wikimedia Commons · Licence: CC BY-SA 3.0 · Author: David Liuzzo, eagle by N3MO

Other flags of 1600