Fashion in European Armor, 1500–1600 – The Metropolitan Museum of Art https://www.metmuseum.org/essays/fashion-in-european-armor-1500-1600
From the beginning of the sixteenth century onward, and at first in addition to the decorative ridges and grooves, armor began to be adorned more and more frequently with etched decoration.
In the Holy Roman Empire, in Spain, and in the Christian nations of southeastern
