Was a ‘double-bind guarantee’ behind the $450m Leonardo sale?
The sale of Leonardo da Vinci’s Salvator Mundi for $450m (including fees) at Christie’s New York on 15 November shattered every record for art prices. Since then, speculation about the identity of the buyer has ranged from Chinese billionaires to the Microsoft co-founder and Leonardo Codex collector Bill Gates; from French government officials for Abu…