Gerrit Dou,  Portrait of a Gentleman with a Walking Stick, ca. 1645, The Leiden Collection, New York

Gerrit Dou, Portrait of a Gentleman with a Walking Stick, ca. 1645, oil on panel, 49.2 x 39.7 cm, signed, right, “GDou”(GD in ligature). The Leiden Collection, New York, GD-113