| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 18/01/1954 | |
| BELGIUM | Ratification | 12/06/1956 | |
| BELGIUM | Withdrawal | 15/04/1964 | 15/04/1965 |
| CAMEROON | Accession | 24/02/1962 | |
| CENTRAL AFRICAN REPUBLIC | Accession | 29/01/1962 | |
| CHAD | Accession | 23/05/1962 | |
| CONGO, PEOPLES REPUBLIC OF | Accession | 05/02/1962 | |
| DAHOMEY | Accession | 05/03/1962 | |
| FRANCE | Signature | 18/01/1954 | |
| FRANCE | Ratification | 30/05/1958 | |
| FRANCE | Withdrawal | 15/04/1964 | 15/04/1965 |
| GABON | Accession | 26/01/1962 | |
| GHANA | Accession | 18/11/1957 | |
| GUINEA | Accession | 24/02/1962 | |
| IVORY COAST | Accession | 24/02/1962 | |
| LIBERIA | Accession | 20/11/1958 | |
| MALAGASY REPUBLIC | Accession | 02/02/1962 | |
| MALI | Accession | 24/02/1962 | |
| MAURITANIA | Accession | 24/02/1962 | |
| NIGER | Accession | 29/01/1962 | |
| PORTUGAL | Signature | 18/01/1954 | |
| PORTUGAL | Ratification | 18/01/1955 | |
| Rhodesia And Nyasaland | Signature | 18/01/1954 | |
| Rhodesia And Nyasaland | Ratification | 03/01/1955 | |
| SENEGAL | Accession | 31/01/1962 | |
| SIERRA LEONE | Accession | 26/06/1962 | |
| SOMALIA | Accession | 24/02/1962 | |
| SOUTH AFRICA | Signature | 18/01/1954 | |
| SOUTH AFRICA | Ratification | 10/03/1954 | |
| TANGANYIKA | Accession | 31/05/1962 | |
| UNITED KINGDOM | Signature | 18/01/1954 | |
| UNITED KINGDOM | Ratification | 12/04/1954 | |
| UNITED KINGDOM | Withdrawal | 15/04/1964 | 15/04/1965 |
| UPPER VOLTA | Accession | 24/02/1962 | |
| ZAIRE | Accession | 24/02/1962 |