We have to double-check your registration and make sure this is not an automated entry in our system. Please complete the test below...
Dim.: 24,5 x 18 cm (the work)
Dim.: 31,5 x 25,5 cm (the mount)
Ref.: Rijksmuseum, Amsterdam, object no. RP-T-1910-66, for a related sanguine drawing which was later used in 'Teekenboek der proportien van't menschelyke lighaam' (or in French: Proportions du corps humain), with plates dated 1747, engraved by Jan Punt. (link) (see added scan)