GERMANY, 1913, Victoria
Louise. 5pf Green (82) tied by "Luftpost Zeppelin Schiff Viktoria-Luise
16.6.13" oval cancel on flown picture postcard of Potsdam aerial view,
message side with printed Zeppelin cachet, Extremely Fine (Image) 
PHILIPPINES, 1926, 2c/1p
Madrid-Manila Overprints (C1-C6, C9-C12, C17). Tied by plane cancels on
legal-size cover to "Panay", "Manila P.I. May 14, 1926" duplex Second
Day cancel, cover with light toning, few small edge tears, otherwise
Very Fine, Scott retail as used stamps
(Image)