World Telecommunications Conferences, 1947, 5¢-50¢ Complete, rare unexploded booklet, containing 10 panes of 50¢, 9 panes of 5¢ & 1 pane of of 8-5¢ + 1-10¢; also including 1 pane of print on both sides of 5¢ value unlisted variety, o.g., never hinged, very rare and unusual item; color Xerox of 2010 A.P.S. certificate. Scott No. 17T1-17T3; $2,730+  Estimate $750 - 1,000. $0 (Image)