Ummm, this plaque is a remnant of the pagan Roman Empire.
In AD 90, the Holy Roman Empire would have to wait another 600 years to start, was not all that holy, was established by a German (not a Roman), and not an empire (more a confederacy), long after the fall of the original Roman Empire.
In AD 90, the Holy Roman Empire would have to wait another 600 years to start, was not all that holy, was established by a German (not a Roman), and not an empire (more a confederacy), long after the fall of the original Roman Empire
The original Roman Empire did not fall till 1453, something like 5 centuries after the founding of the Holy Roman Empire.
The Eastern Roman Empire is often considered a separate entity as the Byzantine Empire, but there is no particularly logical reason to do so, as it had a continuous existence (with an intermission) from Constantine to its fall.
Okay, back to the history books for me!