Main content
![](https://ichef.bbci.co.uk/images/ic/640x360/p05fj8vx.jpg)
A sketch for one of the world鈥檚 most expensive paintings?
Philip Mould examines a sketch attributed to late 19th century French artist Paul Gauguin
Philip Mould examines a sketch attributed to late 19th century French artist Paul Gauguin