EditorialHelena van der Schalcke. Portrait of Helena van der Schalcke (1646-71). Daughter of Gerard van der Schalcke en Johanna Bardoel and the future Wife of Nicolaes Eichelberg. Dating: c. 1648. Measurements: h 34 cm ? w 28.5 cm; h 59 cm ? w 52 cm ? t 6.5 cm.