Mode of payment

Postage may be prepaid– (a) by adhesive postage stamps; or (b) by impressions of postal franking machines officially adopted and working under the immediate control of or by the permission of the Postmaster General; or (c) by the use of a stamped envelope, cover, postcard, or other postal form; or (d) by the use of an embossed or impressed stamp cut out of or otherwise detached from an envelope, cover, postcard, or other postal form; or (e) on a printed packet, by a printed impression, or by any other process authorised by the Postmaster General; or (f) in such other manner as may be prescribed, provided that16 (i) no stamp or impression of a stamping machine which is imperfect or mutilated or defaced in any way shall be used in payment or to denote payment of (ii) no stamp indicating on the face thereof payment of a registration fee as well as postage shall be used in payment of postage on any unregistered postal (iii) packets bearing the impression of stamping machines and intended for impression by stamping machines shall be accepted only at such Post Offices as the Postmaster General thinks fit and within such hours, and under and subject to such rules, conditions and restrictions as shall be prescribed. Postage on-board ship.