Postal Packets on which postage not paid

(1) Subject to the provisions of these Regulations, any letter or postcard upon which no part, or a part only, of the postage payable thereon is prepaid shall be charged with double the amount of the deficient postage, provided that any reply postcard, upon the two portions of which no part or a part only, of the postage is prepaid, shall be detained and (as the case may be) returned or given up to the sender, or returned to the country of origin. (2) Subject to the provisions of these Regulations any outgoing printed packet, commercial packet, small packet, sample packet, or packet consisting of literature for the blind upon which no part or a part only of the postage payable thereon is prepaid may be detained and returned, or given up to the sender, or be forwarded charged with double the amount of the deficient postage, as the Postmaster General may, in his discretion, direct. (3) Any incoming printed packet, commercial packet, small packet, sample packet or packet consisting of literature for the blind upon which no part, or a part only, of the postage payable thereon is prepaid may be detained and returned to the country of origin or be forwarded charged with double the amount of the deficient postage, as the Postmaster General may, in his discretion, direct. (4) The charge upon a postal packet upon which no part, or part only, of the postage payable thereon is prepaid shall not in any case be less than the sum of two cents.