a single sheet of paper, letter-form, folded and gummed on three sides. Bears international preprinted air postage and the word "aerogramme". Intended for air mail correspondence.
Postal services (S) - Payments for the delivery of letters, postcards and parcels Includes: All purchases of new postage stamps, pre-franked postcards and aerogrammes; private mail and parcel delivery. Excludes: Purchase of used or cancelled postage stamps (09.1.5); financial services of post offices (12.5A).