What medium is "Portrait of a Youth with a Surgical Cut in one Eye"?

Portrait of a Youth with a Surgical Cut in one Eye is Encaustic on limewood.

Is "Portrait of a Youth with a Surgical Cut in one Eye" in the public domain?

Yes, Portrait of a Youth with a Surgical Cut in one Eye is in the public domain and available for free download under CC0 license.

Ctrl K

This artwork was created A.D. 190–210.

Unknown Artist, A.D. 190–210