portrait To request a commission from Valerie please contact her at valerie@valeriewiffen.co.uk Wiffen, Valerie J.; Sir Sigmund Sternberg; National Portrait Gallery, London; http://www.artuk.org/artworks/sir-sigmund-sternberg-158856painting by Valerie Wiffenpainting by Valerie Wiffenpainting by Valerie Wiffen