cover Iraq, 1923, Military Flight Cover from Hinaidi Aerodrome to Forces in the Field, an inaugural flight cover (unfranked, but with "By Official Mail, by Air, Baghdad-Mosul, 1-10-23"), addressee's name and squadron number ms. deleted, signed and dated by the pilot, lacks the special flight cachet, but according to AAMC many of the inaugural covers do not have cachets, very fine