British tourist Andy Fields was on vacation in Las Vegas in 2010 when he hit a yard sale and bought five paintings for $5 (£4) from a man who claimed his aunt babysat the artist Andy Warhol when he was a child. Upon his return to the UK, Fields discovered a sketch hidden behind one of the paintings, which experts believe is an early sketch by Warhol of French-Canadian singer Rudy Vallée, worth $2 million (£1.6m).