Saint Augustine Altarpiece (Piero della Francesca)

It is the artist's third known major altarpiece, following his Polyptych of the Misericordia (c.1444-1464) and Polyptych of Perugia (c.1460-1470). It was intended for the church of Sant'Agostino (now rededicated as Santa Chiara) in Sansepolcro. The Augustinians there signed a contract with the artist on 4 October 1454, with Angelo di Giovanni di Simone d'Angelo's signature and that of the artist. He received the last payment on 14 November 1469.

The Augustinians probably took the incomplete work with them when they moved out of the church. It was then completed in its new location before being broken into pieces, possibly during the 16th century. In the first half of the 19th century the main panels of the work were in Milan, as shown by wax stamps on their reverses authorising their export from Austrian Lombardy and also the seals of a number of collectors from Milan. Towards the end of the 19th century the panels appeared as separate lots at an art dealership, leading them to be split between a number of mainly private collections, which later passed to their present public collections or institutions.

To the right of St Michael and to the left of St John can be seen traces of the throne from the lost central panel, Madonna and Child.

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  Augustine of Hippo (Museu Nacional de Arte Antiga, Lisbon)
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  Michael the Archangel (National Gallery, London)
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  John the Evangelist (Frick Collection, New York)
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  Nicholas of Tolentino (Museo Poldi Pezzoli, Milan)

Between Monica and Crucifixion was another saint, now lost.

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  Monica (Frick Collection, New York)
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  Crucifixion (Frick Collection, New York)
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  Apollonia (National Gallery of Art, Washington)
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  An Augustinian Saint (Frick Collection, New York)