'KING GEORGE V STAMPS ISSUED IN ROLLS' BY LESLIE WILKINSON. A fine copy of this excellent 1998 paperback published by The Great Britain Philatelic Society, 47 pages. A comprehensive study of the subject beginning with the background trials and listing the various issues etc. Contents: Background; Downey Head; Profile Head - Royal Cypher Watermark; Profile Head - Block Cypher Watermark; Photogravure; The Commemorative Issues and Dummy Rolls for testing machines. (Ref 127321).