Sleeping Nymph Spied upon by Satyrs Sleeping nymph spied on by satyrs; after a painting based on a print after Anthony van Dyck; A naked sleeping nymph spied on by satyrs. In the background an Italian landscape. To Titian or Lambert Sustris. Part of the pastels collection. Willem V (Prince of Orange-Nassau); Jean-Etienne Liotard; 1756 - 1788; panel; h 30.6 cm x w 41.3 cm w 2.9 kg h 39.9 cm x w 50.2 cm x t 4.8 cm