Superior Stamp and Coin Co.
The Connoisseur Collection of U.S. SDtamps
1918,24c First Airmail, CENTER INVERTED, position 58, o.g., very lightly hinged, perfectly centered, a wonderfully choice example of this rarity, the fabulous centering and flawless condition unquestionably make it one of the very finest known, extremely fine; with 1985 P.F. certificate. Color Photo Plate 7