Raphael painting sells for £18m

A painting by Renaissance artist Raphael has sold for more than £18m ($37.3m) at an auction in London.

The portrait, of Florentine ruler Lorenzo de' Medici, had not been seen in public since 1968.

When it was last sold, the art world was divided over its origins and it sold for just $325.

But experts now agree it is genuine - Christie's auctioneers describing it as the most important Renaissance portrait to be sold at auction for a generation.