Two of Vincent Van Gogh's seven Sunflower paintings are to go on show together at the National Gallery in London from today (January 25).
One example is already featured in the Gallery's permanent collection, while the other is on loan from the Van Gogh Museum in Amsterdam.
The paintings, produced in Arles in the summer of 1888, are among the most recognisable works in the history of art and have been reproduced countless times.
We have this signed letter from Claude Monet, a contemporary of Van Gogh, for sale.
Click here for our free newsletter for the latest on art and other collectibles.