| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | 10/10/1986 |
| Australia | Accession | 21/05/1931 | |
| Australia | Declaration | 07/09/1939 | |
| Australia | Declaration | 17/03/1975 | |
| BELGIUM | Accession | 18/05/1929 | |
| Canada | Accession | 01/07/1931 | |
| Canada | Declaration | 07/12/1939 | |
| Curacao | Extension | 08/08/1930 | |
| DENMARK | Accession | 14/04/1930 | |
| DOMINICA, COMMONWEALTH OF | Withdrawal | 24/11/1987 | |
| ESTONIA | Accession | 03/09/1931 | |
| ETHIOPIA | Accession | 15/11/1935 | |
| FINLAND | Accession | 06/09/1930 | |
| FRANCE | Accession | 21/05/1931 | |
| FRANCE | Declaration | 13/02/1939 | |
| FRANCE | Withdrawal | 10/01/1974 | |
| GREECE | Accession | 14/09/1931 | |
| India | Accession | 21/05/1931 | |
| India | Declaration | 13/02/1939 | |
| INDIA | Declaration | 30/05/1974 | |
| Indies | Extension | 08/08/1930 | |
| Irish Free State | Accession | 26/09/1931 | |
| ITALY | Accession | 07/09/1931 | |
| LATVIA | Accession | 17/09/1935 | |
| LUXEMBOURG | Accession | 15/09/1930 | |
| NETHERLANDS THE | Accession | 08/08/1930 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| New Zealand | Accession | 21/05/1931 | |
| New Zealand | Declaration | 13/02/1939 | |
| NORWAY | Accession | 11/06/1929 | |
| PAKISTAN | Succession | 12/07/1974 | 14/08/1947 |
| PERU | Accession | 21/11/1931 | |
| SPAIN | Accession | 16/09/1930 | |
| SPAIN | Withdrawal | 08/04/1939 | |
| Surinam | Extension | 08/08/1930 | |
| SWEDEN | Accession | 13/05/1929 | |
| SWITZERLAND | Accession | 07/12/1934 | |
| TURKEY | Accession | 26/06/1934 | |
| TURKEY | Withdrawal | 18/12/1978 | |
| UNITED KINGDOM | Accession | 21/05/1931 | |
| UNITED KINGDOM | Declaration | 13/01/1939 | |
| UNITED KINGDOM | Withdrawal | 08/02/1974 | 16/08/1974 |