Frames and supports in 15th and 16th-century Southern Netherlandish painting

BRUGES, GROENINGE MUSEUM 451 17. Adriaen Isenbrant, Triptych of the Virgin and Child . Closed: red porphyry and coats of arms. Open: St John and St Jerome , first half 16th century Inv. no. 0000.GRO1376.I Provenance: Collection of Mgr. Baron de Béthune, Bruges. Donated to the Archaeological Society in 1909 by his heirs. Bibliography: De Vos 1982, 133. Panels: central panel: two boards (?). Wings: single boards. The central panel has been painted in the frame. Frames: the frame of the central panel is wider and has been assembled differently than the frames of the wings. The former has slotted joints which are pegged, with a mixed cut on the front and cut square at the back. The wings have mitred lap joints at the top and mortise and tenon joints (?) at the bottom. The joints of the wings are not pegged. The outer sides of the frames of the wings have a rounded strip of wood to the right and a corresponding groove on the left. This allowed the wings to be fitted tight on closing. They are also closed with a hook. The polychromy is partly original, but heavily damaged and restored.