| Entry into force: | 1 January 1961 by exchange of letters, in accordance with article 6. |
| Registration: | 1 January 1961, No. 5503. |
| Status: | Signatories: 8 ,Parties: 91. |
| Text: | United Nations, Treaty Series, vol. 383, p. 229. |
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| Participant | Signature | Definitive signature (s), Ratification, Accession (a) |
| Austria | 20 Feb 1958 | 3 Mar 1959 |
| Belgium | 5 Feb 1958 | 10 Sep 1959 |
| Denmark2 | 5 Feb 1958 s | |
| France | 7 Feb 1958 | 19 Aug 1959 |
| Germany3,4 | 10 Feb 1958 | 21 Oct 1960 |
| Italy | 5 Feb 1958 | 8 Mar 1960 |
| Luxembourg | 12 Feb 1958 | 19 Feb 1969 |
| Netherlands5 | 7 Feb 1958 | 7 May 1959 |
| Switzerland1 | 20 Feb 1958 | 7 Jul 1960 |
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1. On depositing the instrument of ratification the Government of Switzerland declared that the provisions of the Convention will apply to the Principality of Liechtenstein, so long as it is linked to Switzerland by a customs union treaty.
2. The signature by Denmark was affixed subject to ratification. In a communication received on 16 May 1958, the Government of Denmark notified the Secretary-General of the withdrawal of the reservation as to ratification.
3. See note 2 under "Germany" in the "Historical Information" section in the front matter of this volume.
4. See note 1 under "Germany" regarding Berlin (West) in the "Historical Information" section in the front matter of this volume.