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1. This Convention shall enter into force three months after five of the Members or Customs or Economic Unions referred to in Article 24, paragraphs 1 and 7, of this Convention have signed this Convention without reservation of ratification or have deposited their instruments of ratification or accession.
2. For any Contracting Party signing without reservation of ratification, ratifying or acceding to this Convention after five Members or Customs or Economic Unions have signed it without reservation of ratification or have deposited their instruments of ratification or accession, this Convention shall enter into force three months after the said Contracting Party has signed without reservation of ratification or deposited its instrument of ratification or accession.
3. Any Annex to this Convention shall enter into force three months after five Members or Customs or Economic Unions have accepted that Annex.
4. For any Contracting Party which accepts an Annex after five Members or Customs or Economic Unions have accepted it, that Annex shall enter into force three months after the said Contracting Party has notified its acceptance. No Annex shall, however, enter into force for a Contracting Party before this Convention has entered into force for that Contracting Party.