A petition calling for the resignation of Thailand’s deputy prime minister attracted thousands of signatures on Monday, heaping pressure on the junta’s second-in-command to step aside amid a scandal over a luxury watch and undeclared assets. It was not known how much General Prawit’s Richard Mille wristwatch costs. Reporters said that General Prawit’s Richard Mille was not included in the list of assets and liabilities he declared with the National Anti-Corruption Committee when he joined the cabinet three years ago. Preecha Suwannathat, a former Anti-Corruption Commission member and one of the NACC’s founding figures, said it would be difficult for Prawit to justify the claim that he had borrowed the watch from a friend.