Marble portrait head of the Emperor Constantine I – Roman – Late Imperial, Constantinian – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/252884
From Rome From before 1631 and until 1902, in the Giustiniani Collection, Rome; 1902, purchased from the Giustiniani family through Giuseppe Sangiorgi by Mrs. Frederick F. Thompson (Mary Clark Thompson), New York; 1902-1923, collection of Mary Clark Thompson; acquired in 1926, bequest of Mary Clark Thompson
Here is a link to download the audio instead. Playlist 1203.
