In this handout photo released Thursday, June 12, 2008, by the Rembrandt House Museum, the 1628 self-portrait ‘Rembrandt Laughing’ by Rembrandt is seen, in Amsterdam, Netherlands. Whether it was a sharp guess or lucky optimism that lead him to bid, someone at a British auction last year picked up a Rembrandt for a bargain. The self-portrait wasn’t always thought to be worth much. Before the recent investigation, others assumed it to be by one of Rembrandt’s students or a Rembrandt imitator. It was valued at 1,500 pounds when it came up for auction last October at Moore, Allen and Innocent in Gloucestershire. It sold for 2.2 million pounds ($4.5 million).