| Country | Action | Action Date | Effective Date |
|---|
| Algeria | Extension | 07/01/1961 | |
| ARMENIA | Signature | 11/05/2001 | |
| Azores | Extension | 12/10/1981 | |
| BELGIUM | Definitive Signature | 20/04/1959 | 04/09/1960 |
| CYPRUS | Signature | 07/04/1978 | |
| CZECH REPUBLIC | Signature | 09/03/1999 | 10/04/1999 |
| DENMARK | Definitive Signature | 30/11/1960 | 01/01/1961 |
| DENMARK | Declaration | 29/12/1960 | |
| Faroe Islands | Extension | 29/12/1960 | |
| FINLAND | Declaration | 01/01/1905 | |
| FINLAND | Signature | 04/07/1990 | |
| FINLAND | Ratification | 04/07/1990 | 05/08/1990 |
| FINLAND | Declaration | 18/07/1991 | |
| FRANCE | Definitive Signature | 20/04/1959 | 04/09/1960 |
| FRANCE | Declaration | 07/01/1961 | |
| FRANCE | Declaration | 16/09/1986 | |
| GERMANY FEDERAL REPUBLIC | Signature | 20/04/1959 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 06/11/1961 | 07/12/1961 |
| GERMANY FEDERAL REPUBLIC | Declaration | 06/11/1961 | |
| Guernsey, Bailiwick of | Extension | 28/06/1968 | |
| HUNGARY | Signature | 16/06/2009 | |
| HUNGARY | Ratification | 06/11/2009 | 07/12/2009 |
| ICELAND | Signature | 08/09/1966 | |
| ICELAND | Ratification | 08/09/1966 | 09/10/1966 |
| IRELAND, REPUBLIC OF | Definitive Signature | 29/10/1969 | |
| Isle of Man | Extension | 28/06/1968 | |
| ITALY | Signature | 04/12/1963 | |
| ITALY | Ratification | 01/06/1965 | 02/07/1965 |
| Jersey, Bailiwick of | Extension | 28/06/1968 | |
| Land Berlin | Extension | 06/11/1961 | |
| LIECHTENSTEIN | Accession | 28/10/1969 | 29/11/1969 |
| LUXEMBOURG | Signature | 20/04/1959 | |
| LUXEMBOURG | Ratification | 24/04/1961 | 25/05/1961 |
| Madeira | Extension | 12/10/1981 | |
| MALTA | Definitive Signature | 17/01/1989 | 18/02/1989 |
| MALTA | Declaration | 17/01/1989 | |
| NETHERLANDS THE | Signature | 04/06/1959 | |
| NETHERLANDS THE | Ratification | 03/08/1960 | 04/09/1960 |
| NORWAY | Definitive Signature | 25/11/1960 | 01/01/1961 |
| NORWAY | Declaration | 13/12/1960 | |
| POLAND | Signature | 19/05/2004 | 01/01/1900 |
| POLAND | Declaration | 19/05/2004 | 01/01/1900 |
| POLAND | Ratification | 20/04/2005 | 21/05/2005 |
| PORTUGAL | Signature | 10/05/1979 | |
| PORTUGAL | Ratification | 12/10/1981 | 13/11/1981 |
| PORTUGAL | Declaration | 12/10/1981 | |
| ROMANIA | Signature | 05/11/1999 | |
| ROMANIA | Ratification | 24/04/2001 | 25/05/2001 |
| Sahara | Extension | 07/01/1961 | |
| SLOVAKIA | Signature | 03/06/2004 | 04/09/2004 |
| SLOVAKIA | Ratification | 27/01/2005 | 28/02/2005 |
| SLOVAKIA | Declaration | 24/03/2005 | |
| SPAIN | Signature | 10/03/1982 | |
| SPAIN | Ratification | 30/06/1982 | 31/07/1982 |
| SWEDEN | Definitive Signature | 30/11/1960 | 01/01/1961 |
| SWITZERLAND | Signature | 29/11/1965 | |
| SWITZERLAND | Ratification | 20/12/1966 | 21/01/1967 |
| UNITED KINGDOM | Signature | 26/08/1968 | |
| UNITED KINGDOM | Definitive Signature | 26/08/1968 | |
| UNITED KINGDOM | Declaration | 26/08/1968 | |
| UNITED KINGDOM | Declaration | 11/02/2003 | |