Diego Giacometti, pair of stag photophores (around 1970), est €400,000-€600,000). Courtesy of Christie’s

The Giacometti of Hubert de Givenchy

Christie's Paris, 6 March
Total estimate 6M-9M
The sale features 21 pieces custom-made for the fashion designer Givenchy by Diego Giacometti (1902-85). Born in Switzerland, Diego (the brother of Alberto) went to Paris as a young man to work with the interior designer Jean-Michel Frank, who introduced him to such fashion luminaries as Elsa Schiaparelli and Coco Chanel. He also met Gustav Zumsteg, a textile designer who supplied silks to Dior, Yves Saint Laurent and Givenchy. After Zumsteg gave Givenchy a bronze by Diego, Givenchy so admired it that he sought Diego out and they began a 20-year friendship. The bronze works in the sale, including a set of octagonal tables, stools, bird andirons, stag candleholders and a white-patinated lantern (est. 300,000-400,000; sold for 2.4m with premium), were made in the 1970s and 1980s for Givenchys Chateau de Jonchet in the Loire Valley. The highly successful sale achieved 32.7m with premium, with the earliest of three octagonal tableswhich Monsieur de Givenchy considered the perfect shape to place in the corner of a roomas the top lot (est. 600,000-800,000; sold for 4.2m with premium).

Still Life with Flowers, attributed to Johann Caspar Anton Dillenius (1791-1869)

19th-century paintings and watercolours at Dorotheum, Vienna, 8 March
Estimate 3,000-3,600
A doctor whose father collected Old Masters, Johann Caspar Anton Dillenius is a largely unknown 19th-century German painter said to have been inspired both by nature and by 17th-century Dutch still lifes. Flowers were a favourite subject, and in 2012 the Landesmuseum Mainz, where he lived and worked, organised the show: Spring Fragrance and Summer Splendour: Watercolours by Caspar Dillenius in the Graphic Collection. In this oil on canvas, the blooms are depicted with precision, delicacy and mastery, suggesting careful study of the Dutch tradition.