What medium is "Maria-Theresa, Empress of the Holy Roman Empire"?

Maria-Theresa, Empress of the Holy Roman Empire is Gold.

Is "Maria-Theresa, Empress of the Holy Roman Empire" in the public domain?

Yes, Maria-Theresa, Empress of the Holy Roman Empire is in the public domain and available for free download under CC0 license.

Ctrl K

Unknown Artist, 1775