1. This Protocol of amendment shall be open for signature by the Member States of the Council of Europe which have signed or acceded to the Convention, and by the European Economic Community, which may become Parties to this Protocol of amendment by:
(a) signature without reservation as to ratification, acceptance or approval; or
(b) signature subject to ratification, acceptance or approval, followed by ratification, acceptance or approval.
2. No Member State of the Council of Europe shall sign without reservation as to ratification, acceptance or approval, or deposit an instrument of ratification, acceptance or approval, unless it is already or becomes simultaneously a Party to the Convention.
3. Any State not a member of the Council which has acceded to the Convention may also accede to this Protocol of amendment.
4. Instruments of ratification, acceptance, approval or accession shall be deposited with the Secretary General of the Council of Europe.