Crucifixion Diptych (van der Weyden) The painting's provenance prior to the mid-19th century is unknown. Its extreme starkness has led art historians to theorize that it was created as a devotional work, possibly for a Carthusian monastery. It is not known if the panels comprised a self-contained diptych, two-thirds of a triptych, or originally were a single panel. Some art historians have mentioned that the work seems unbalanced overall and lacking symmetry (which might indicate a missing panel or panels). Recent scholarship proposes that the panels functioned as the outer shutters of a carved altarpiece. The background to the panels is unknown. Scholars have theorized
Early Netherlandish painting both sides or with the reverse bearing family emblems, crests or ancillary outline sketches. In the case of single panels, the markings on the reverse are often wholly unrelated to the obverse and may be later additions, or as Campbell speculates, "done for the artist's amusement". Painting each side of a panel was practical since it prevented the wood from warping. Usually the frames of hinged works were constructed before the individual panels were worked on. Glue binder was often used as an inexpensive alternative to oil. Many works using this medium were produced but few survive today because of