Van Gogh or not Van Gogh? That is the question. Elimar is believed to have been painted around 1889. Oil on canvas, 45.7cm by 41.9cm, and inscribed 'Elimar' in the lower-right corner. Picture courtesy of LMI Group International.

It's the things dreams are made of: you pick up an innocuous painting at a car boot sale only to discover that it might be a previously unknown piece by one of the most influential figures in art worth millions. This time round though the dream is a reality because experts believe they've just verified a long-lost Van Gogh masterpiece. So, how does the evidence stack up, asks Rosie Paterson?

It's the things dreams are made of: you pick up an innocuous painting at a car boot sale only to discover that it might be a previously unknown piece by one of the most influential figures in art worth millions. This time round though the dream is a reality because experts believe they've just verified a long-lost Van Gogh masterpiece. So, how does the evidence stack up, asks Rosie Paterson?