The Institut Polonais in Paris reports that a Swiss enthusiast, Alain Kohler, has come up with a hitherto unknown photograph of Frederic Chopin.

The Daguerrotype portrait was taken in or around 1847 in the Paris workshop of Louis-Auguste Bisson.

Chopin looks less haggard that usual, and rather annoyed.

Dr Kohler was previously responsible for discovering a lost Chopin piano.