| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Signature | 14/12/1956 | |
| AUSTRIA | Ratification | 07/04/1960 | |
| BOSNIA AND HERZEGOVINA | Succession | 12/01/1994 | 06/03/1992 |
| BOSNIA AND HERZEGOVINA | Notification | 12/01/1994 | |
| CUBA | Accession | 14/02/1966 | |
| CUBA | Reservation | 14/02/1966 | |
| CZECH REPUBLIC | Succession | 02/06/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 02/07/1962 | |
| CZECHOSLOVAKIA | Reservation | 02/07/1962 | |
| DENMARK | Accession | 09/02/1968 | |
| FINLAND | Accession | 11/01/1967 | |
| GHANA | Accession | 29/08/1962 | |
| IRELAND, REPUBLIC OF | Accession | 31/05/1962 | |
| Isle of Man | Extension | 24/02/1970 | 25/05/1970 |
| LATVIA | Accession | 14/05/1997 | 12/08/1997 |
| LUXEMBOURG | Signature | 20/02/1957 | |
| LUXEMBOURG | Ratification | 28/05/1965 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| MOROCCO | Accession | 29/08/1962 | |
| MOROCCO | Reservation | 29/08/1962 | |
| NETHERLANDS THE | Signature | 15/05/1957 | |
| NETHERLANDS THE | Ratification | 01/08/1986 | 30/10/1986 |
| NORWAY | Definitive Signature | 17/05/1957 | |
| POLAND | Signature | 14/12/1956 | |
| POLAND | Ratification | 04/09/1969 | |
| POLAND | Declaration | 04/09/1969 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SWEDEN | Signature | 14/12/1956 | |
| SWEDEN | Ratification | 16/01/1958 | |
| UNITED KINGDOM | Ratification | 06/08/1969 | |
| UNITED KINGDOM | Accession | 06/08/1969 | 04/11/1969 |
| UZBEKISTAN | Accession | 22/10/1998 | 20/01/1999 |
| YUGOSLAVIA | Accession | 29/05/1959 | |
| YUGOSLAVIA | Succession | 12/03/2001 | 27/04/1992 |