Limited edition flown FDC, 8.5 x 4.5, with an attractive color cachet honoring the 25th anniversary of the first ascent of Mount Everest, numbered 88/500, postmarked May 29, 1978, signed in black ballpoint by Edmund Hillary and in blue ballpoint by Tenzing Norgay, and by five others. Stamp to lower right indicates that the cover was “Carried on Royal Nepal Airlines, Helicopter Flight, 29 May 78.” In very fine condition.
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