1930-31, Signed Registered Air Post Covers. 55 legal-size covers, each bearing different government signature, including President Herbert Hoover, Gov. Franklin D. Roosevelt, Sec. of Treas. A. Mellon, all franked with 5¢ Beacon and 1930 Xmas seal, most uprated with a variety of 2¢ Reds including 2¢ Edison coils (few with line pairs), one each with Kans. and Nebr. overprints., most with file folds, generally Very Fine. Estimate  $750 - 1,000. $0 (Image)