What medium is "Head of Dionysus (?) for attachment, possibly for a couch"?

Head of Dionysus (?) for attachment, possibly for a couch is ivory.

Is "Head of Dionysus (?) for attachment, possibly for a couch" in the public domain?

Yes, Head of Dionysus (?) for attachment, possibly for a couch is in the public domain and available for free download under CC0 license.

This artwork was created 332–30 B.C..

Unknown Artist

332–30 B.C.

Medium

ivory

Dimensions

H. 4.9 cm (1 15/16 in.); W. 5.1 cm (2 in.); D. 2.8 cm (1 1/8 in.)

Classification

Hellenistic head, boss

Period

Ptolemaic Period

Department

Egyptian Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Purchase, Edward S. Harkness Gift, 1926

Accession Number

26.7.1301