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496 addressees in the countries of the Union where adelivery is or shall be organised, are fixed as follows:

The charge on commercial papers cannot be less than 25 centimes per packet, and the charge on samples cannot be less than 10 centimes per packet.

2. In addition to the rates fixed by the preceding paragraph there may be levied:

When the rate of prepayment for the single post card comprises one or other of the surcharges authorised in the two preceding paragraphs, the same rate is applicable to each half of the reply-paid post card.

3. In case of insufficient prepayment, correspondence of every kind is liable to a charge equal to double the amount of the deficiency, to be paid by the addressees; but that charge may not exceed that which is levied in the country of destination on unpaid correspondence of the same nature, weight, and origin.

4. Articles other than letters and post cards must be prepaid at least partly.