painting, 17th or 18th century, Signature front, bottom right, in the niche: J. van Huysum, canvas, oil paint, painted, Carrier: 53 ? 41.4 ? 2.2cm 530 ? 414 ? 22mm, With frame: 61 ? 49 ? 2.5cm 610 ? 490 ? 25mm, still life, flower, snail, Still life w