| Country | Action | Action Date | Effective Date |
|---|
| Anguilla | Extension | 03/02/1986 | |
| ANTIGUA AND BARBUDA | Succession | 25/10/1988 | 01/11/1981 |
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | |
| AUSTRIA | Signature | 26/09/1927 | |
| AUSTRIA | Ratification | 18/07/1930 | |
| AUSTRIA | Declaration | 01/04/1952 | |
| Bahamas | Extension | 26/05/1931 | |
| BAHAMAS | Succession | 16/02/1977 | |
| BANGLADESH | Signature | 27/06/1979 | |
| BANGLADESH | Ratification | 27/06/1979 | 27/09/1979 |
| Belgian Congo | Extension | 05/06/1930 | |
| BELGIUM | Signature | 26/09/1927 | |
| BELGIUM | Ratification | 27/04/1929 | |
| BELGIUM | Reservation | 27/04/1929 | |
| BELGIUM | Declaration | 05/06/1930 | |
| BELGIUM | Declaration | 01/04/1954 | |
| BOLIVIA | Signature | 26/09/1927 | |
| British Guiana | Extension | 26/05/1931 | |
| British Honduras | Extension | 26/05/1931 | |
| British Virgin Islands | Extension | 09/03/1932 | |
| Burma | Extension | 19/10/1938 | 19/01/1939 |
| Cayman Islands | Extension | 26/05/1931 | |
| CROATIA | Succession | 26/07/1993 | 08/10/1991 |
| Curacao | Extension | 28/01/1933 | |
| CZECH REPUBLIC | Succession | 09/02/1996 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 25/09/1929 | |
| CZECHOSLOVAKIA | Ratification | 18/09/1931 | |
| CZECHOSLOVAKIA | Reservation | 18/09/1931 | |
| DANZIG | Signature | 26/09/1927 | |
| DANZIG | Ratification | 26/04/1938 | |
| DENMARK | Signature | 26/09/1927 | |
| DENMARK | Ratification | 25/04/1929 | |
| DENMARK | Reservation | 25/04/1929 | |
| DENMARK | Declaration | 01/10/1953 | |
| ESTONIA | Signature | 26/09/1927 | |
| ESTONIA | Ratification | 16/05/1929 | 10/08/1929 |
| ESTONIA | Reservation | 16/05/1929 | |
| Falkland Islands | Extension | 26/05/1931 | |
| FINLAND | Signature | 10/09/1929 | |
| FINLAND | Ratification | 30/07/1931 | |
| FRANCE | Signature | 26/09/1927 | |
| FRANCE | Ratification | 13/05/1931 | |
| FRANCE | Reservation | 13/05/1931 | |
| FRANCE | Declaration | 15/04/1954 | |
| GERMAN DEMOCRATIC REPUBLIC | Declaration | 01/01/1905 | |
| GERMAN DEMOCRATIC REPUBLIC | Re-Application | 31/01/1974 | 22/01/1958 |
| GERMANY | Signature | 26/09/1927 | |
| GERMANY | Ratification | 01/09/1930 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1905 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1952 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1952 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/04/1952 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1953 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/10/1953 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1954 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/04/1954 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 15/04/1954 | |
| Gibraltar | Extension | 26/05/1931 | |
| Gold Coast | Extension | 26/05/1931 | |
| GREECE | Signature | 05/09/1930 | |
| GREECE | Ratification | 15/01/1932 | |
| GREECE | Reservation | 15/01/1932 | |
| GREECE | Declaration | 01/10/1953 | |
| GRENADA | Succession | 07/02/1974 | |
| GUYANA | Succession | 01/01/1905 | |
| Hong Kong | Extension | 10/02/1965 | 10/05/1965 |
| Hong Kong | Notification | 10/06/1997 | 01/07/1997 |
| INDIA | Signature | 09/04/1935 | |
| INDIA | Ratification | 23/10/1937 | |
| INDIA | Declaration | 23/10/1937 | |
| IRELAND, REPUBLIC OF | Signature | 29/11/1956 | |
| IRELAND, REPUBLIC OF | Ratification | 10/06/1957 | |
| ISRAEL | Accession | 27/02/1952 | |
| ITALY | Signature | 26/09/1927 | |
| ITALY | Ratification | 12/11/1930 | |
| ITALY | Declaration | 01/01/1952 | |
| Jamaica | Extension | 26/05/1931 | |
| JAPAN | Signature | 04/02/1952 | |
| JAPAN | Ratification | 11/07/1952 | |
| Kenya | Extension | 26/05/1931 | |
| KENYA | Succession | 01/04/1970 | |
| KOREA REPUBLIC OF | Signature | 04/03/1968 | |
| Leeward Islands | Extension | 09/03/1932 | |
| LUXEMBOURG | Signature | 26/09/1927 | |
| LUXEMBOURG | Ratification | 15/09/1930 | |
| LUXEMBOURG | Reservation | 15/09/1930 | |
| LUXEMBOURG | Declaration | 01/01/1954 | |
| MACEDONIA THE FYR OF | Succession | 10/03/1994 | 17/09/1991 |
| Malta | Extension | 11/10/1934 | |
| MALTA | Succession | 16/08/1966 | 21/09/1964 |
| Mauritius | Extension | 13/07/1931 | |
| MAURITIUS | Succession | 12/03/1968 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| NETHERLANDS THE | Signature | 26/09/1927 | |
| NETHERLANDS THE | Ratification | 12/09/1931 | |
| NETHERLANDS THE | Declaration | 28/01/1933 | |
| NETHERLANDS THE | Declaration | 01/01/1953 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NEW ZEALAND | Signature | 17/09/1928 | |
| NEW ZEALAND | Ratification | 09/04/1929 | |
| Newfoundland (UK) | Extension | 07/01/1931 | |
| NICARAGUA | Signature | 26/09/1927 | |
| Northern Rhodesia | Extension | 13/07/1931 | |
| PAKISTAN | Succession | 15/08/1947 | 15/08/1947 |
| PAKISTAN | Declaration | 01/01/1953 | |
| Palestine | Extension | 26/05/1931 | |
| PERU | Signature | 15/05/1930 | |
| PORTUGAL | Signature | 04/09/1930 | |
| PORTUGAL | Ratification | 10/12/1930 | |
| PORTUGAL | Reservation | 10/12/1930 | |
| Rhodesia | Extension | 20/07/1955 | |
| ROUMANIA | Signature | 27/09/1927 | |
| ROUMANIA | Ratification | 22/06/1931 | |
| ROUMANIA | Reservation | 22/06/1931 | |
| Ruanda Urundi | Extension | 05/06/1930 | |
| SIAM | Signature | 03/09/1930 | |
| SIAM | Ratification | 07/09/1931 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SPAIN | Signature | 26/09/1927 | |
| SPAIN | Ratification | 15/01/1930 | |
| Surinam | Extension | 28/01/1933 | |
| SWEDEN | Signature | 26/09/1927 | |
| SWEDEN | Ratification | 08/08/1929 | |
| SWITZERLAND | Signature | 22/09/1930 | |
| SWITZERLAND | Ratification | 25/09/1930 | |
| Tanganyika | Extension | 26/05/1931 | |
| TANZANIA | Succession | 01/01/1905 | |
| Turks And Caicos Islands | Extension | 26/05/1931 | |
| Uganda | Extension | 26/05/1931 | |
| UGANDA | Signature | 05/05/1965 | |
| UNITED KINGDOM | Signature | 26/09/1927 | |
| UNITED KINGDOM | Ratification | 02/07/1930 | |
| UNITED KINGDOM | Declaration | 07/01/1931 | |
| UNITED KINGDOM | Declaration | 26/05/1931 | |
| UNITED KINGDOM | Declaration | 13/07/1931 | |
| UNITED KINGDOM | Declaration | 09/03/1932 | |
| UNITED KINGDOM | Declaration | 11/10/1934 | |
| UNITED KINGDOM | Declaration | 19/10/1938 | |
| UNITED KINGDOM | Declaration | 01/01/1953 | |
| UNITED KINGDOM | Declaration | 20/07/1955 | |
| UNITED KINGDOM | Declaration | 10/02/1965 | 10/05/1965 |
| UNITED KINGDOM | Declaration | 16/12/1985 | |
| West Indies | Extension | 28/01/1933 | |
| Western Samoa | Extension | 09/04/1929 | |
| WESTERN SAMOA | Succession | 01/01/1962 | |
| Windward Islands | Extension | 26/05/1931 | |
| YUGOSLAVIA | Signature | 13/03/1959 | |
| YUGOSLAVIA | Ratification | 13/03/1959 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |
| ZAMBIA | Succession | 01/04/1970 | |
| Zanzibar | Extension | 26/05/1931 | |