Susan Moore is the art market correspondent and associate editor of Apollo

The court casket from Newbattle Abbey (1565), Master of Perspective, Nuremberg (£750,000).
From Graffiti de la série VIII, La magie (series 1935–50; prints, c. 1956 and 1960), courtesy Waddington Custot
Comptoir amoncellement (Laden Counter) (1968), Jean Dubuffet. Pace Gallery (price on application) Photo: Tom Barrett; © 2019 Artists Rights Society (ARS), New York/ADAGP, Paris
Detail showing three man at the Seder table, with wine glasses and mazzot, from the Lombard Haggadah (c. 1390–1400), circle of Giovannino de Grassi (Master of the Paris Tacuinum?), Milan
The Shield of Achilles (1823), designed and modelled by John Flaxman.
Merli Futuristi (Futuristic Blackbirds) (detail; c.1924), Giacomo Balla
At the Lakeside, Moonlight, Grimshaw
Judith and Holofernes, (c. 1607), attributed to Caravaggio, photo: © Cabinet Turquin
The Private View at the Royal Academy, 1881 (1881–83), William Powell Frith.
The sale of David Hockney’s Portrait of an Artist (Pool with Two Figures) on 15 November 2018 at Christie’s in New York.
Installation view of ‘Luigi Valadier: Splendor in Eighteenth-Century Rome’ at the Frick Collection, New York, 2018. Pictured are the statues of the six saints from the High Altar of the Cathedral of Santa Maria la Nuova, Monreale, from c. 1773.
Wood and Rock (11th century), Su Shi.
Kutenai Duck Hunter, Edward S. Curtis
Celebrations (detail; 1990), Paul Guiragossian.
Oval lobed dish with chinoiserie motifs (c. 1735–45), Giuseppe Sarao.
Sir Richard Wallace, 1st Bt (1888), John Thomson.
Habet! In the Coliseum A.D.XC (1865), Simeon Solomon.
The Oyster Meal, Jacob Ochervelt
La Joueuse de Cerceau (The Hoop Dancer) (1891), Jean-Léon Gérôme.
Marilyn, Niki de Saint Phalle
Silk samite shirt with ducks (600–800), Central Asia, Sogdiana
L'Étreinte (detail; 1903), Pablo Picasso.
Hubert de Givenchy photographed in September 2012 alongside a figure of Bacchus (c. 1700), attributed to François Girardon.