Reply To: Waltham 18s Home › Forums › General Discussion Forum › Waltham 18s › Reply To: Waltham 18s January 30, 2014 at 4:18 pm #55546 willofiamModerator Topics Started: 75Total Posts: 1437 Im going to guess its the mainspring and a broken winding stem. willofiamReply To: Waltham 18s