Sophia Hedwichia, Countess of Nassau-Dietz. William Jacobsz. Delff (Dutch, 1580-1638); after Michiel Jansz. van Mierevelt (Dutch, 1567-1641). Date: 1631. Dimensions: 379 x 305 mm (image); 425 x 310 mm (plate); 450 x 334 mm (sheet). Engraving in black