What medium is "Madame Jacques-Louis Leblanc (Françoise Poncelle, 1788–1839)"?

Madame Jacques-Louis Leblanc (Françoise Poncelle, 1788–1839) is Oil on canvas.

Is "Madame Jacques-Louis Leblanc (Françoise Poncelle, 1788–1839)" in the public domain?

Yes, Madame Jacques-Louis Leblanc (Françoise Poncelle, 1788–1839) is in the public domain and available for free download under CC0 license.

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Jean Auguste Dominique Ingres, 1823