When was "Portrait of an unidentified gentleman" created?

This artwork was created mid-16th or mid-19th century.

What medium is "Portrait of an unidentified gentleman"?

Portrait of an unidentified gentleman is Painted enamel on copper, partly gilt.

Yes, Portrait of an unidentified gentleman is in the public domain and available for free download under CC0 license.

Unknown Artist

mid-16th or mid-19th century

Medium

Painted enamel on copper, partly gilt

Dimensions

8 7/8 × 6 1/2 in. (22.5 × 16.5 cm)

Classification

Enamels

Culture

French, Limoges

Department

European Sculpture and Decorative Arts

Museum

Metropolitan Museum of Art, New York, NY

Credit

Fletcher Fund, 1945

Accession Number

45.60.16