| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | 07/07/1958 | |
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| AUSTRIA | Signature | 13/12/1957 | |
| AUSTRIA | Ratification | 15/01/1960 | 15/01/1960 |
| BELGIUM | Signature | 29/04/1957 | |
| BELGIUM | Ratification | 20/04/1970 | 20/04/1970 |
| BELGIUM | Declaration | 20/04/1970 | |
| DENMARK | Signature | 29/04/1957 | |
| DENMARK | Ratification | 17/07/1959 | 17/07/1959 |
| FRANCE | Signature | 29/04/1957 | |
| FRANCE | Declaration | 29/04/1957 | |
| GERMANY FEDERAL REPUBLIC | Signature | 29/04/1957 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 18/04/1961 | 18/04/1961 |
| GREECE | Signature | 29/04/1957 | |
| ICELAND | Signature | 29/04/1957 | |
| IRELAND, REPUBLIC OF | Signature | 29/04/1957 | |
| ITALY | Signature | 29/04/1957 | |
| ITALY | Ratification | 29/01/1960 | 29/01/1960 |
| ITALY | Declaration | 29/01/1960 | |
| Land Berlin | Extension | 18/04/1961 | 18/04/1961 |
| LIECHTENSTEIN | Signature | 11/12/1979 | |
| LIECHTENSTEIN | Ratification | 18/02/1980 | 18/02/1980 |
| LITHUANIA | Signature | 08/12/2011 | |
| LUXEMBOURG | Signature | 29/04/1957 | |
| LUXEMBOURG | Ratification | 05/07/1961 | 05/07/1961 |
| MALTA | Signature | 12/12/1966 | |
| MALTA | Declaration | 12/12/1966 | |
| MALTA | Ratification | 28/02/1967 | 28/02/1967 |
| MALTA | Declaration | 28/02/1967 | |
| MALTA | Declaration | 02/09/1983 | 05/09/1983 |
| NETHERLANDS THE | Signature | 29/04/1957 | |
| NETHERLANDS THE | Ratification | 07/07/1958 | 07/07/1958 |
| NETHERLANDS THE | Declaration | 07/07/1958 | |
| New Guinea | Extension | 07/07/1958 | |
| NORWAY | Signature | 29/04/1957 | |
| NORWAY | Ratification | 27/03/1958 | 30/04/1958 |
| SLOVAK REPUBLIC | Signature | 12/01/2001 | |
| SLOVAK REPUBLIC | Ratification | 07/05/2001 | 07/05/2001 |
| SLOVAK REPUBLIC | Declaration | 07/05/2001 | |
| Surinam | Extension | 07/07/1958 | |
| SWEDEN | Signature | 29/04/1957 | |
| SWEDEN | Ratification | 30/04/1958 | 30/04/1958 |
| SWEDEN | Declaration | 30/04/1958 | |
| SWITZERLAND | Signature | 15/04/1964 | |
| SWITZERLAND | Ratification | 29/11/1965 | 29/11/1965 |
| SWITZERLAND | Statement | 29/11/1965 | |
| TURKEY | Signature | 08/05/1958 | |
| UNITED KINGDOM | Signature | 29/04/1957 | |
| UNITED KINGDOM | Ratification | 07/12/1960 | |
| UNITED KINGDOM | Ratification | 07/12/1960 | 07/12/1960 |
| UNITED KINGDOM | Declaration | 07/12/1960 | |