André Lhote’s portrait of his wife Marguerite, also an artist, was painted in 1910, the year after the couple were married. The sitter is presented in a regal pose, emphasised by her red and gold dress, as she gazes out of the picture with a calm sense of self-confidence. Their relationship would later break down, but here every brushstroke speaks of Lhote’s devotion to her

Estimate: €40,000-60,000

until 27‌ May‌, Online

Masterful in its depiction of light, Dune Landscape with a Thatched Cottage next to an Oak Tree, from 1634‌, marks a period of transition in the career of Jan van Goyen. While the blues and greys associated with his teacher Esaias van de Velde are present in the upper part of the image, the lower section is notable for the tones of brown and yellow that would come to dominate his later work

Estimate: €30,000-50,000

11‌ June‌, Paris

This René Boivin brooch, dating from the 1980s, is based on a 1949 design. Since the firm’s foundation in the late 19th century, Boivin jewels have often been modelled on animals, and this one takes the form of a brightly coloured bird. Crafted in gold, it is covered from head to tail feathers in circular-cut sapphires and rubies, with a cabochon stone for the eye

Estimate: £10,000-15,000

until 6‌ June‌, Online