What medium is "Mud jar sealing impressed with a row of spiral signs"?

Mud jar sealing impressed with a row of spiral signs is Clay (mud).

Is "Mud jar sealing impressed with a row of spiral signs" in the public domain?

Yes, Mud jar sealing impressed with a row of spiral signs is in the public domain and available for free download under CC0 license.

This artwork was created ca. 3100 B.C..

Unknown Artist

ca. 3100 B.C.

Medium

Clay (mud)

Dimensions

W: 11.9 cm (4 11/16 in.)

Classification

Sealing, jar, spiral signs

Period

Predynastic, Late Naqada III

Department

Egyptian Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of The Egyptian Research Account and British School of Archaeology in Egypt, 1912

Accession Number

12.187.36