The museum has kept two of the three basic parts that structured the large altarpiece decorating the Guardian Angel chapel in the parish church of Santa Maria: the central panel, with the image of the Holy Guardian Angel, and one of the side panels, where the Annunciation and the Nativity are pictured. The so-called Master of Cervera adopted models from Valencia from the third quarter of the 15th century, permeating a popular Netherlandish School style typical of many works in the areas of Lleida and Aragón.