| Country | Action | Action Date | Effective Date |
|---|
| Anguilla | Extension | 12/06/1964 | |
| Antilles | Extension | 05/08/1957 | |
| ARGENTINA | Signature | 24/06/1926 | |
| ARGENTINA | Ratification | 14/03/1950 | |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Declaration | 01/01/1986 | |
| Australia | Signature | 24/06/1926 | |
| Australia | Ratification | 01/04/1935 | |
| Australia | Declaration | 21/06/1973 | |
| Bahamas | Extension | 15/01/1963 | |
| BAHAMAS | Succession | 25/05/1976 | |
| BANGLADESH | Succession | 22/06/1972 | |
| BARBADOS | Extension | 08/05/1967 | |
| BARBADOS | Succession | 08/05/1967 | |
| BELGIUM | Signature | 24/06/1926 | |
| BELGIUM | Ratification | 03/10/1927 | |
| BELIZE | Accession | 15/12/1983 | 15/12/1983 |
| Bermuda | Extension | 04/02/1963 | |
| BOSNIA AND HERZEGOVINA | Succession | 02/06/1993 | 02/06/1993 |
| BRAZIL | Signature | 24/06/1926 | |
| BRAZIL | Ratification | 18/06/1965 | |
| British Honduras | Extension | 12/06/1964 | |
| British Virgin Islands | Extension | 22/08/1966 | |
| Brunei | Decision Resvd. | 03/08/1964 | |
| BULGARIA | Signature | 24/06/1926 | |
| BULGARIA | Ratification | 29/11/1929 | |
| Burma | Extension | 31/10/1932 | |
| Canada | Signature | 24/06/1926 | |
| Canada | Ratification | 30/06/1938 | |
| CHILE | Signature | 24/06/1926 | |
| CHILE | Ratification | 18/10/1935 | |
| CHINA | Signature | 24/06/1926 | |
| CHINA | Ratification | 02/12/1936 | |
| COLOMBIA | Signature | 24/06/1924 | |
| COLOMBIA | Ratification | 20/06/1933 | |
| CROATIA | Succession | 08/10/1991 | 08/10/1991 |
| CUBA | Signature | 24/06/1926 | |
| CUBA | Ratification | 07/07/1928 | |
| Curacao | Extension | 15/12/1937 | |
| DJIBOUTI | Accession | 03/08/1978 | |
| Dominica | Extension | 15/10/1963 | |
| DOMINICA, COMMONWEALTH OF | Succession | 28/02/1983 | 28/02/1983 |
| East Indies | Extension | 15/12/1937 | |
| EGYPT | Accession | 04/08/1982 | |
| ESTONIA | Bound | 01/01/1905 | |
| ESTONIA | Signature | 24/06/1926 | |
| ESTONIA | Ratification | 10/05/1929 | |
| Falkland Islands | Extension | 08/05/1963 | |
| FINLAND | Signature | 24/06/1926 | |
| FINLAND | Ratification | 08/04/1947 | |
| FRANCE | Signature | 24/06/1926 | |
| FRANCE | Ratification | 04/04/1928 | |
| FRANCE | Declaration | 27/11/1974 | |
| GERMANY | Signature | 24/06/1926 | |
| GERMANY | Ratification | 20/09/1930 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1905 | |
| GHANA | Accession | 18/03/1965 | |
| Gibraltar | Extension | 07/03/1963 | |
| Guernsey | Extension | 14/06/1929 | |
| Hong Kong | Extension | 12/06/1964 | |
| Hong Kong | Declaration | 06/05/1977 | |
| India | Signature | 24/06/1926 | |
| India | Ratification | 31/10/1932 | |
| IRAQ | Signature | 24/06/1926 | |
| IRAQ | Ratification | 04/10/1966 | |
| Irish Free State | Signature | 24/06/1926 | |
| Irish Free State | Ratification | 05/07/1930 | |
| ITALY | Signature | 24/06/1926 | |
| ITALY | Ratification | 10/10/1929 | |
| JAPAN | Accession | 24/06/1926 | |
| JAPAN | Ratification | 22/08/1955 | |
| Jersey | Extension | 14/06/1929 | |
| LIBERIA | Accession | 21/06/1977 | |
| LUXEMBOURG | Signature | 24/06/1926 | |
| LUXEMBOURG | Ratification | 16/04/1928 | |
| Malaysia | Extension | 03/03/1964 | |
| Malta | Extension | 18/02/1963 | |
| MALTA | Succession | 04/01/1965 | |
| MAURITANIA | Accession | 08/11/1963 | |
| MEXICO | Signature | 24/06/1926 | |
| MEXICO | Ratification | 12/05/1934 | |
| Montserrat | Extension | 04/02/1963 | |
| MOROCCO | Signature | 24/06/1924 | |
| MOROCCO | Ratification | 14/03/1958 | |
| NETHERLANDS THE | Signature | 24/06/1926 | |
| NETHERLANDS THE | Ratification | 15/12/1937 | |
| NETHERLANDS THE | Declaration | 05/08/1957 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| Netherlands West Indies | Decision Resvd. | 03/08/1964 | |
| New Zealand | Signature | 24/06/1926 | |
| New Zealand | Ratification | 29/03/1938 | |
| NICARAGUA | Signature | 24/06/1926 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| NORWAY | Signature | 24/06/1926 | |
| NORWAY | Ratification | 29/03/1940 | |
| Pakistan | Extension | 31/10/1932 | |
| PANAMA | Accession | 19/06/1970 | |
| Papua New Guinea | Extension | 21/06/1973 | |
| PAPUA NEW GUINEA | Succession | 01/05/1976 | |
| PERU | Signature | 24/06/1926 | |
| PERU | Ratification | 04/04/1962 | |
| POLAND | Signature | 08/08/1931 | |
| PORTUGAL | Accession | 23/05/1983 | 23/05/1983 |
| PORTUGAL | Declaration | 19/11/1999 | |
| Seychelles | Extension | 16/10/1964 | |
| SIERRA LEONE | Accession | 15/06/1961 | |
| Singapore | Extension | 18/02/1963 | |
| SINGAPORE | Succession | 25/10/1965 | |
| SLOVENIA | Succession | 09/06/1992 | 09/06/1992 |
| SOMALI DEMOCRATIC REPUBLIC | Succession | 11/06/1975 | |
| SOMALIA | Signature | 24/06/1926 | |
| SOMALIA | Ratification | 18/11/1960 | |
| SPAIN | Signature | 24/06/1926 | |
| SPAIN | Ratification | 23/02/1931 | |
| St Christopher, Nevis and Anguilla | Extension | 12/06/1964 | |
| St Helena | Decision Resvd. | 08/02/1965 | |
| The Gambia | Extension | 21/05/1964 | |
| TUNISIA | Succession | 14/04/1970 | |
| UNITED KINGDOM | Signature | 24/06/1926 | |
| UNITED KINGDOM | Ratification | 14/06/1929 | |
| URUGUAY | Signature | 24/06/1926 | |
| URUGUAY | Ratification | 06/06/1933 | |
| VENEZUELA | Signature | 24/06/1926 | |
| VENEZUELA | Ratification | 20/11/1944 | |
| YUGOSLAVIA | Signature | 24/06/1926 | |
| YUGOSLAVIA | Ratification | 30/09/1929 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2000 |