Found:


Study of a shell of a tortoise

Jacques de Gheyn (III) (attributed to), c. 1616

Four Studies of an Amputated Human…

Jacques de Gheyn (II) (attributed to), c. 1615

Study of a shell of a tortoise

Jacques de Gheyn (III) (attributed to), c. 1615

Two Anatomical Studies of An Arm

Jacques de Gheyn (III) (attributed to), c. 1615