Design for a statue of the Virgin and Child on a bracket ( recto ); Fragmentary architectural study (?) ( verso )

Attributed to Artus Quellinus (Sint-Truiden 1625-1700 Antwerpen) Design for a statue of the Virgin and Child on a bracket (recto); Fragmentary architectural study (?) (verso) red chalk and light brown wash, heightened with white, executed on three sheets, pen and brown ink framing lines, fragmentary fleur-de-lys watermark 15 1/8 x 5 3/8 in. (38.3 x 13.6 cm); together with Circle of Peter Paul Rubens (Siegen 1577-1640 Antwerp), Head of a sphinx, after Rubens, red chalk, watermark PX, 19 7/8 x 14 5/8 in. (50.5 x 37.1 cm) (2)