A portrait of Vincent van Gogh. [Photo/CFP]

Dutch post-Impressionist Vincent van Gogh produced all his work - some 900 paintings and 1,100 drawings - during the last 10 years of his life. After years of suffering painful anxiety and frequent bouts of mental illness, he finally put it to an end with a gunshot aged 37 in 1890. His work was then known to only a handful of people and appreciated by fewer still.