What is Leonardo da Vinci's best painting?

Barely twenty survive and half of them start an argument. Two hang in the same museum; one sits in a vault nobody can visit.

1

Mona Lisa

The portrait of Lisa Gherardini that Leonardo kept and reworked for the rest of his life.

2

The Last Supper

The refectory mural in Milan, painted in a tempera technique that began flaking within Leonardo's lifetime.

3

Lady with an Ermine

The portrait of Cecilia Gallerani, mistress of Ludovico Sforza, now in Kraków.

4

Salvator Mundi

The blessing Christ that sold for 450.3 million dollars in 2017 and whose attribution is still disputed.

5

Virgin of the Rocks

Two versions exist, one in the Louvre and one in London, after a decades-long payment dispute.

6

The Virgin and Child with St Anne

Three generations built into one pyramid of bodies, left not quite finished.

7

St John the Baptist

Leonardo's last painting: a figure emerging from darkness with one finger raised.

8

Ginevra de' Benci

An early Florentine portrait and the only Leonardo painting in the Americas.

9

The Adoration of the Magi

Abandoned in 1482 at the brown underpainting stage and never resumed.

10

La Belle Ferronnière

A Milanese court portrait in the Louvre whose sitter has never been settled.

11

St Jerome in the Wilderness

A monochrome saint in the Vatican, laid in and abandoned.

12

The Baptism of Christ

Verrocchio's panel with an angel by the young Leonardo, said to have shamed his teacher.

13

The Musician

A small Milanese portrait in the Ambrosiana, and Leonardo's only surviving male portrait.