Airmail, 1918, 6¢-24¢ First Issue, Complete, complete sheets of 100, o.g., never hinged, fresh intact sheets, 16¢ with a few internal gum wrinkles and 24¢ sheet with some perf separations not affecting plate block, still a Very Fine set, from the Estate of the late John E. Du Pont. Scott No. C1-C3  $38,620. $0 (Image)