Van Gogh also often signed works that formed part of exchanges with artist friends. The still life Three Pairs of Shoes (1886, Harvard Art Museums/Fogg Museum, Cambridge, US), which Van Gogh exchanged with the Australian artist John Peter Russell, is a striking example: the work features not one, but two signatures.
One signature is small and barely visibly, scratched into the paint in Van Gogh’s customary style. The second appears in the upper right in large block letters, in handwriting that closely resembles Russell’s.
Why Russell may have added this signature himself remains unknown. Perhaps he was unable to decipher Van Gogh’s signature, or thought it was too modest, and decided to give his friend’s name a more prominent place – just as he did in the portrait he painted of Van Gogh that same year (1886, Van Gogh Museum).
On rare occasions Van Gogh used his signature to enhance a painting, as in Seascape near Les Saintes-Maries-de-la-Mer (1888, Van Gogh Museum). He was not fully satisfied with the colour scheme and, as he wrote to his brother, placed in the lower left ‘a very outrageous red signature, because I wanted a red note in the green.’ (letter 660).
Van Gogh’s signatures add an extra dimension to his works, but their absence is also significant. Many late masterpieces remained unsigned. After his admission to the institution in Saint-Rémy in 1889, his self-confidence gradually diminished.
During this period, he signed hardly any of his paintings. In Auvers, he added ‘Vincent’ to a painting only once – on a portrait that he gave to his sitter, Adeline Ravoux (Adeline Ravoux, 1890, private collection).