When an object is undervalued and then sold at auction, who is accountable for lost profits?

In January the media reported that an item catalogued by Lawrences auctioneers in Somerset as a 19th century French claret jug, which had an estimated price of £100-£200, had been sold at auction to an anonymous buyer for £220,000. Reports quickly followed that the purchaser believed the jug to be an 11th century Fatimid ewer with a market value significantly greater than the hammer price. Specialist dealers described the find as possibly the biggest ‘sleeper’ ever to appear on the Islamic art market.