SA: 1925 FIRST FLIGHT of Government Experimental Air Service Cape Town to Durban: Registered envelope franked Airs full set & extra 1d & KGV 6d clearly tied by despatch cds 28 FEB. The front also shows in violet, the special S A AIR MAIL postmark of the same date and in black, the same handstamp used on day of flight 2 MAR. Backstamped on arrival.. Attractive use of the Full Set franking.
