Madonna and Child with Saint Peter and Saint Stephen [middle panel]
overall size: 207 x 60.5 x 3.5 cm (81 1/2 x 23 13/16 x 1 3/8 in.)  original panel: 175 x 52.5 x 3.5 cm (68 7/8 x 20 11/16 x 1 3/8 in.)  painted surface: 155 x 52.5 cm (61 x 20 11/16 in.)