Orsini Altarpiece of Christ's Passion on one side and two reverse panels on the other. When closed, it showed "Christ Bearing the Cross" with the now-lost Berlin panel on the reverse. Orsini Altarpiece The Orsini Altarpiece, Orsini Polyptych or Passion Polyptych is a painting produced at an unknown location by Simone Martini for private devotion by a cardinal of the Orsini family. Its precise date is still under discussion. It was taken to France very early in its lifespan and formed a major influence on late medieval French artists. It is now split between the Louvre, the Royal Museum of Fine Arts,
Saint Peter Martyr Altarpiece testimony) also mention a second altarpiece by the artist in the same church, also dating to 1476, now known as the "Saint Peter Martyr Altarpiece"'. It is therefore theorised that the altarpieces were both dismantled during rebuilding of the church in 1776, then sold to the antiquarian Grossi who sold all the panels separately and grouped some of them into the altarpiece that Cardinal Zelada bought from him. Federico Zeri and Rodolfo Pallucchini then joined the altarpieces together, initially referring to the first (the high altarpiece), the "Pietà" in the Metropolitan Museum, and then to the "Madonna" in the Museum