When was "Unidentified object" created?

This artwork was created ca. late 4th millennium BCE.

What medium is "Unidentified object"?

Unidentified object is Limestone, black.

Yes, Unidentified object is in the public domain and available for free download under CC0 license.

Unknown Artist

ca. late 4th millennium BCE

Medium

Limestone, black

Dimensions

2.83 x 3.27 x 3.58 in. (7.19 x 8.31 x 9.09 cm)

Classification

Stone-Implements

Period

Uruk

Department

Ancient Near Eastern Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Rogers Fund, 1962

Accession Number

62.70.17