Wilton Diptych International Gothic style, and the nationality of the unknown artist is probably French or English. The Wilton Diptych is painted on two panels of Baltic oak, set in frames of the same material and joined by two hinges so that it may be closed to protect the inner painting. The inner faces of the panels are in excellent condition for their age, though some glazes have been lost, but the outer faces have paint losses from handling. The painting is in tempera, the ground paint being mixed with egg yolk and laid in thin glazes. The background and many details
Death of the Virgin Mary of Košátky broader circle of paintings executed in a similar way, such as the Vyšší Brod Altarpiece, the Kaufmann Crucifixion and the panels of the Morgan Collection (the "Small Morgan Panels"). The panel was probably originally the wing of a diptych, the second part of which was the Wrocław Holy Trinity. In the quality of its execution, the picture ranks among the finest known works dating from the 14th century. It is at the same time the most Italian work of the entire Bohemian school. The construction of space reveals that the artist was acquainted with the central Italian painting of Siena