Artikel 1

If their laws do not already make provision to this effect, the High Contracting Parties undertake to alter their laws so that the validity of obligations arising out of a bill of exchange or a promissory note or the exercise of the rights that flow there from shall not be subordinated to the observance of the provisions concerning the stamp.
Nevertheless, the Contracting Parties may suspend the exercise of these rights until payment of the stamp duties they prescribe or of any penalties incurred. They may also decide that the quality and effects of an instrument „immediately executory” which, according to their legislation may be attributed to a bill of exchange and promissory note, shall be subject to the condition that the stamp law has, from the issue of the instrument, been duly complied with in accordance with their laws.
Each of the High Contracting Parties reserves the right to restrict the undertaking mentioned in paragraph 1 to bills of exchange only.