Signature of Neville Chamberlain.
Own work by uploader, traced in Adobe Illustrator from http://i.dailymail.co.uk/i/pix/2008/09/30/article-1065227-007DAF5100000258-559_468x577.jpg  That work was created by Neville Chamberlain in the course of his official duties as prime minister not later than 30 September 1938, and any copyright expired fifty years after creation.
Neville Chamberlain