Airmail, 1918, 6¢ orange. Rich bright color, tied by purple "Air Mail Service Wash. N.Y., Washington, Dec 16, 1918" postmark on P. Ward, Jr. First Flight cover to Philadelphia, Pa., Dec. 17 receiving backstamp, Very Fine. AAMC No. RC-1b. Scott No. C1  Estimate $1,000 - 1,500. $0 (Image)

Airmail, 1918, 6¢ orange. Top margin plate block of 10 with arrow, o.g., barest trace of hinge (appears never hinged), beautifully centered, radiant color, fresh and Extremely Fine, choice so nice; with 2006 P.F. certificate. Scott No. C1  $1,160. $0 (Image)