Airmail, 1923, Second Issue, 8¢-24¢ complete, single of each on separate fresh Worden First Day of Issue cover, tied by appropriate 1923 Washington, D.C. slogan machine cancels, a Very Fine and choice set. Scott No. C4-C6  $1,750. $0 (Image)

Airmail, 1923, Second Issue, 8¢-24¢ Complete, complete sheets of 100, o.g., mostly never hinged, intact sheets with attractive overall centering, 8¢ with side plate number cut into, 16¢ with a few defects in s.e. stamps and 24¢ with a few reinforced perf separations not affecting plate blocks, F.-V.F., from the Estate of the late John E. Du Pont. Scott No. C4-C6  $37,120. $0 (Image)