Design for a winged altar; around 1500; feather and brush in dark brown; over black chalk (or charcoal); inside of the altar in places yellowish washed; center part cut out and firmly mounted on support; part of the conversation and predella adorned; wing mounted so that; they can be opened and closed; sheet: 62.6 x 29.9 cm (middle section) |; Sheet: 26.8 x 15.8 cm (left wing) |; Leaf: 26.9 x 15.5 cm (right wing); Not referenced; Anonym; Oberrhein; um 1500