only known surviving sculpture. There was even another Salvator Mundi supposedly by Leonardo, known as the Ganay, named after its last known owner, the French resistance hero Jean Louis, Marquis de Ganay. The last time a painting’s reattribution to Leonardo had been widely accepted was ninety-nine years ago: the Benois Madonna, which today hangs in St Petersburg’s Hermitage Museum.
When Old Master dealers are not selling established masterpieces on behalf of an important client – the easy side of the business – they spend their time finding lost, overlooked or simply underrated works of art, dusting them off, identifying their author and then attempting to sell them as something bigger and better than what they had originally bought them as. The game is to exercise ‘connoisseurship’, using the eye, as it is known, to spot undervalued works. ‘I liken this ability to recognise an artist from what he paints to knowing your best friend’s voice when he calls on the phone,’ Simon told me. ‘He doesn’t need to be identified, you just know, from a combination of the intonation of the voice, the timbre of it, the pattern of speech, the language that he or she might use. There are these elements that when put together amount to fairly distinctive patterns that you, as someone who knows this person, would recognise. That’s really the essence of connoisseurship. There are many in the art community and the art historical community who dismiss it as some sort of voodoo process, but it’s both very rational and at the same time is based on a subjective understanding of things certain people have a knack for, or have studied …’ It is not easy to find the right words to define this elusive process. No wonder Simon was nervous.
It’s worth mentioning that the painting inside his case was a connoisseur’s worst nightmare. It had once been as damaged as any Renaissance painting could be. It had a great slash down the middle; the paint had been scraped away to the wood on parts of the most important part of any portrait, the face; it had broken into five pieces and was held together by a ramshackle combination of wooden batons on the back, known as a ‘cradle’. There was no contemporary documentation: not a contract, not an eyewitness account from the time, not a note in a margin about this painting, not one scintilla of evidence that dated from the lifetime of the artist, aside from the odd drawing of an arm or a torso, which bore only a partial resemblance to the finished picture. The painting had vanished from sight for a total of 184 of its estimated five hundred years of existence – 137 years between 1763 and 1900, and another forty-seven years between 1958 and 2005. When the great British art historian Ellis Waterhouse saw it at an auction in London in 1958, he scribbled one word in his catalogue: ‘wreck’.
Robert Simon was on a high-risk mission. He hadn’t even been able to afford the insurance premium for the full worth of his hand luggage. The auction house Sotheby’s had helped him in the end by kindly writing a low valuation of the painting at only $50 million. His piece was fragile. He wasn’t sure it would survive the plane trip, let alone make it onto the walls of a world-class museum or into the saleroom of a famous auction house. The panel on which the painting had been executed had been pieced back together and beautifully restored, but under its freshly varnished surface lay a hidden flaw: a huge knot in the lower centre. When it was studied by technical panel specialists in Florence, they said it was the worst piece of wood they had ever seen.
CHAPTER 2
The countryside north of Milan sweeps slowly up towards the still blue lakes and then the jagged outline of the Alps. Before the land rises to alpine heights there are foothills and farmland that were once dotted with walnut trees, whose thick canopies of smooth-edged leaves shuffled in breezes and shook in winds. Their dense webs of branches broke up the hot sunlight, and farmyard cats scratched their backs on the trees’ distinctive, deeply furrowed dark bark. The trees grew quickly, developing thick trunks – up to two metres in diameter – and lived up to two hundred years. They are mentioned in medieval Italian legends about female shamans who summoned the spirit world by dancing around them. Millennia earlier, according to Roman myth, Jupiter, the most powerful of all the gods, subsisted on walnuts when he walked among men.
In his notebooks, Leonardo studied the structure of the walnut and other trees in the same way he studied so many other phenomena of the natural world. He observed how the colouring of the leaves was a product of four things: direct light, lustre (reflected light), shadow and transparency. He went on to analyse more complicated principles governing the structure of trees. He discovered one of the basic mathematical laws of their growth, that the combined size of a tree’s branches is equal to the width of its trunk, and the smaller branches that spring from larger ones follow the same proportional rule. At the heart of Leonardo’s life work was this pairing of the minutely detailed observation of nature with an understanding of the principles governing the appearance and behaviour of things, which today we call empiricism. For Leonardo, something had to be understood before it could be drawn. In a note dated April 1490 in his largest set of notes, the Codex Atlanticus, he wrote: ‘The painter who merely copies by practice and judgement of the eye, without reason, is like the mirror, which imitates within itself all the things placed before it without cognition of their existence.’ In Leonardo’s paintings, the detail can be overwhelming. Each leaf, each fold of cloth, each curl of hair can be different from the one beside it, yet each may share the same formal structure.
Leonardo’s mind was poised between the medieval and the modern eras,* which is one of the reasons he is such an iconic and mysterious character today. His notebooks give the thrilling sensation that the modern idea of knowledge is being invented on their pages. The Codex Atlanticus contains, amid the drawings of machines, aeroplanes, weaponry and human anatomy on its 1,119 pages, enigmatic prophecies that double as riddles for court entertainment, a literary genre dating back to the Middle Ages.1 For example: ‘There shall appear huge figures in human shape, and the nearer to you they approach, the more will their immense size diminish’ (shadows), and ‘You shall behold the bones of the dead, which by their rapid movement direct the fortunes of their mover’ (dice). He also predicted that ‘There will be many who will be moving one against the other, holding in their hands the sharp cutting iron. These will not do each other any hurt other than that caused by fatigue, for as one leans forward, the other draws back an equal space; but woe to him who intervenes between them, for in the end he will be left cut in pieces’ (a saw). The humble walnut tree, too, receives a mention here: ‘Within walnut trees, and other trees and plants, there shall be found very great hidden treasures.’ The walnut tree from which the single plank of wood was hewn on which the Salvator Mundi was painted was not concealing treasure, but it – or at least the section used for our painting – did hold its own secret: a deformity dangerous for artists.
For many years the tree from which the Salvator Mundi sprang would have performed its duty providing nuts for culinary and medicinal purposes. Its annual harvest would have enriched Renaissance pasta dishes such as spiced walnut linguine, or fig and walnut ravioli, or would have been combined with the tops of the bitter rue plant in concoctions to ward off the plague. Then one day the decision would have been made to sell the wood of the tree. It would have been dug up with spades rather than felled with an axe, since the best wood is near the base. Some of the timber would have been used to make ornate carved tables, chairs and caskets for the homes of noblemen. Other blocks would be reverentially carved into statuettes of saints and placed on the ends of choir stalls, or in the niches of altars. The finest parts would be used for the intricate Renaissance craft of intarsia, or wood inlay: different types of wood, each a different shade, were cut into delicately shaped strips to build sepia pictures of landscapes or religious scenes, which were set into cabinets and desks. This walnut tree was cut into planks for all these purposes, and a single plank, 45cm wide and 66cm high, would become our painting.
The walnut timber of the Salvator Mundi was brought on a cart to Milan, a city with a population of between 150,000 and 300,000 people. Three times the size of Florence, Milan was evolving in concentric rings, its population spilling out beyond the city walls into new suburbs. The nobles lived in high-walled palaces, with thick rusticated façades, behind