3356 Reserved spaces. Approved attach- ments. INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [62 STAT. 5. At least the right half of the front is reserved for the address of the addressee and the service notes or labels; the postage stamps or postage-paid impressions shall be applied to the front, and, as far as possible, to the right half of the card. The sender may use the back and the left half of the front, subject to the provisions of Section 6 following. 6. It is forbidden to join or attach samples of merchandise or similar articles to post cards. However, illustrations, photographs, stamps of any kind, labels and clippings of any kind, of paper or other very thin material, as well as address labels or slips to be folded back, may be affixed thereto, on condition that such articles are not of such a nature as to alter the character of the post cards, and that they adhere completely to the card. Such articles may be affixed only on the back or on the left half of the address side of the post card, except address labels or slips, which may occupy the entire front. As for stamps of any kind likely to be mistaken for postage stamps, they may be placed only on the back. 7. Post cards not fulfilling the conditions laid down for that class of articles are treated as letters with the exception, however, of those on which the irregularity consists solely of the application of the stamps on the back. The latter are considered as unprepaid and are treated accordingly, depending upon the classification to which they belong, based on the text which they contain or their dimensions. ARTICLE 115. Post cards with reply paid. 1. Post cards with reply paid shall have on the front, in the French language, as the heading of the first part: Carte Postale avec reponse payee (post card with reply paid), and Carte postale-reponse (reply post card) on the second part. Each of the two halves shall, more- over, fulfill the other conditions laid down for a single post card; they are folded, one over the other, so that the fold forms the upper edge, and may not be fastened in any manner. 2. The address of the reply card shall be on the inside of the article. 3. It is permissible for the sender to indicate his name and address on the front of the reply half. 4. The sender is also authorized to have printed on the back of the reply card a questionnaire to be filled in by the addressee; the latter may also return the inquiry half attached to the reply portion. In this case, the address of the inquiry card shall be crossed out and placed on the inside of the article. 5. The prepayment of the reply half by means of postage stamps of the country which has issued the card is valid only if both halves of the post card with reply card have arrived joined together from the country of origin and if the reply half is sent from the country where it was received by mail and is addressed to the said country of origin. If those conditions are not fulfilled, it is treated as an unprepaid post card.
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