Below is a photo of the frame for Heironymos Bosch Painting in His Studio.  The frame is hard curly maple, cherry, and black walnut.  I had troubles capturing a quality photo of the frame.  Also pictured are a few new details:  a great horned owl, bluebird, and some crows in the right-hand panel, and a plowman leading a pair of oxen on the left-hand panel.