Heinrich Köhler 384 Auction – Day 2 Single Lots & Airmail and Zeppelin Mail – inclusive the collection of the Sieger family

1872, 2½ pia. dark violet, fresh colours, tied by cds. "POSTE KEDEVIE EGIZIANE CAIRO 7 73" repeated alongside, to envelope to Wien, adjacent strike of the straightline "Franca" in italic (payment according to the Austro-Egyptian postal convention in effect from 1868), arrival cds. "WIEN 22 7 73". A fine, correctly franked at 2½ piasters and scarce cover