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.