Airmail, 1930, $2.60 Graf Zeppelin. Tied by "Varick St. Sta., May 7, 1930" machine postmark on Roessler brown printed H. Eckner cachet flight cover, purple U.S. & red German cachet, reverse with Rio De Janeiro airmail and Manha transit date stamps, Very Fine. Scott No. C15  Estimate $500 - 750. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. In combination with 5¢ Winged Globe on flight cover, tied by "Varick St. Sta., Apr 26, 1930" machine postmark, purple U.S. and red German flight cachets, Very Fine. Scott No. C15  Estimate $300 - 400. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. Right margin plate number single, tied by "Varick St, Sta., N.y., Apr 30, 1930" slogan machine cancel on flight cover, red German and purple U.S. flight cachets, Lakehurst backstamp; stamp with some light perf toning, F.-V.F. Scott No. C15  Estimate $200 - 300. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. O.g., never hinged, well centered, deep bold color, Extremely Fine; with 2008 P.S.E. Graded certificate (XF 90, SMQ $1,950). Scott No. C15  $1,200. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. O.g., lightly hinged, centered low with even margins around, F.-V.F. Scott No. C15  $775. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. Top margin block of 4 with plate number, o.g., never hinged, hinged in ungummed selvage only, rich color, choice centering, some tiny gum skips, fresh and Extremely Fine. Scott No. C15  $4,800. $0 (Image)

Airmail, 1930, $2.60 Graf Zeppelin. Neat slogan machine cancel, exceptional centering amid nicely balanced margins, bold color, Extremely Fine and choice. Scott No. C15  $575. $0 (Image)