Hendrick Berckman (Klundert 1629 – Middelburg 1679), A Young Boy with a Dog. Oil on mahogany panel, 31 ¼ x 24 ¾ inches (79.5 x 63 cm). Photo: Courtesy Lawrence Steigrad Fine Arts HELVOIRT.- An extraordinary display of masterpieces will be on show at TEFAF...