1938, large-size registered cover from MALAKAL via Athens,
franked by set of ten stamps 1931-38 air mails, all tied by "Sudan air mail Malakal 4.3.38"
cds., reg. label on front, transit and arrival mark on
the reverse, greek censor on front, plus 3 piastres on 7 1/2 p. single from Port Soudan to Swiss, fine and attractive pair.
