1476 Altarpiece

The 1476 Altarpiece or San Domenico Altarpiece is a 1476 tempera and gold on panel altarpiece by Carlo Crivelli. Its central panel of the Pietà is now in the Metropolitan Museum of Art in New York, whilst the other nine are now in the National Gallery, London.
History.
The altarpiece was likely originally constructed for the Dominican church of Ascoli Piceno, given the inclusion of Dominican saints on the lower levels of the altarpiece. The church held another 1476 Crivelli work, the "Saint Peter Martyr Altarpiece". Both works were dismantled from their altars due to renovations in the church. They were then sold to an antiquarian, Grossi, who further separated the panels and regrouped them. (The predellas that went with the altarpieces are lost.)
The altarpiece was seen by Luigi Lanzi and purchased by Francesco Saverio de Zelada in Rome in 1789, and it arrived in Florence with the . The "1476 Altarpiece" arrived at London's National Gallery in 1868, having come from the Demidov collection. 
Art historians Federico Zeri and reintegrated the formerly separated altarpieces, referring first to the "Pietà" in the Metropolitan Museum and second to the "Madonna" in the Museum of Fine Arts of Budapest. In 1961, the National Gallery again disjoined its panels and reconstructed them into two separate polytychs.
Description and style.
The altarpiece has a traditional setting, with a "Madonna Enthroned with Child" at the center, the saints depicted to the sides, and on the upper level a Pietà and half-figure saints.
The structure of the altarpiece perplexed critics for a long time. Art historians eventually adopted the theory that the altarpiece was actually an assemblage of panels from different sources.
Panels.
Lower register:
Upper register: