Oil on cardboard, 19.0 cm x 14.1 cm. The work is currently on display in the Van Gogh Museum, Amsterdam (Vincent van Gogh Foundation)
This painting was long thought to be a self-portrait of Vincent; however, another view is that it shows his brother Theo.
The brothers, namely, bore a striking resemblance to one another. Unfortunately, there is no decisive evidence to determine who is actually portrayed, which is why the painting now has a double title.
The portrait is unusually small and painted in considerable detail. Van Gogh was probably trying to compete with portrait photos. He had written some time earlier:
“it's a cause worth fighting for to show people that there's something else in human beings, besides what the photographer is able to get out of them with his machine.”
If you Want to download the complete archive about Van Gogh (272 pic/900 mb), here is it the link: https://drive.google.com/open?id=1uUyPKaZGMzc2qf3PVhMYagXr6Dl11396
Ciao!