| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Antigua | Extension | 12/03/1926 | |
| ANTIGUA AND BARBUDA | Succession | 25/10/1988 | 01/11/1981 |
| Antilles | Extension | 01/01/1986 | |
| Aruba | Extension | 01/01/1986 | |
| AUSTRIA | Signature | 24/11/1924 | |
| AUSTRIA | Ratification | 25/01/1928 | |
| AUSTRIA | Re-Application | 15/04/1953 | 01/04/1952 |
| AUSTRIA | Declaration | 11/06/1953 | |
| Bahamas | Extension | 23/01/1931 | |
| BAHAMAS | Succession | 16/02/1977 | |
| BANGLADESH | Signature | 27/06/1979 | |
| BANGLADESH | Ratification | 27/06/1979 | 09/08/1979 |
| BELGIUM | Signature | 24/09/1923 | |
| BELGIUM | Ratification | 23/09/1924 | |
| BELGIUM | Re-Application | 01/04/1954 | |
| BOLIVIA | Signature | 30/09/1930 | |
| BRAZIL | Signature | 24/09/1923 | |
| BRAZIL | Ratification | 05/02/1932 | |
| BRAZIL | Re-Application | 13/10/1953 | 01/09/1953 |
| BRITISH EMPIRE | Signature | 24/09/1923 | |
| BRITISH EMPIRE | Declaration | 24/09/1923 | |
| BRITISH EMPIRE | Ratification | 27/09/1924 | |
| BRITISH EMPIRE | Re-Application | 30/01/1953 | 01/01/1953 |
| BRITISH EMPIRE | Declaration | 11/06/1953 | |
| British Guiana | Extension | 12/03/1926 | |
| British Honduras | Extension | 12/03/1926 | |
| Burma | Extension | 19/10/1938 | 02/12/1938 |
| Burma | Reservation | 19/10/1938 | |
| Ceylon | Extension | 12/03/1926 | |
| CHILE | Signature | 16/09/1924 | |
| CROATIA | Succession | 26/07/1993 | 08/10/1991 |
| Curacao | Extension | 24/09/1923 | |
| Curacao | Reservation | 24/09/1923 | |
| Curacao | Withdrawal Res. | 12/04/1940 | |
| CZECH REPUBLIC | Succession | 09/02/1996 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 25/09/1929 | |
| CZECHOSLOVAKIA | Ratification | 18/09/1931 | |
| DANZIG | Signature | 05/08/1927 | |
| DANZIG | Ratification | 26/04/1938 | |
| DENMARK | Signature | 30/05/1924 | |
| DENMARK | Declaration | 30/05/1924 | |
| DENMARK | Ratification | 06/04/1925 | |
| DENMARK | Re-Application | 27/11/1953 | 01/10/1953 |
| Dominica | Exte (check it) | ||
| ESTONIA | Signature | 24/09/1923 | |
| ESTONIA | Reservation | 24/09/1923 | |
| ESTONIA | Ratification | 16/05/1929 | 04/07/1929 |
| Falkland Islands | Extension | 12/03/1926 | |
| FINLAND | Signature | 24/09/1923 | |
| FINLAND | Ratification | 10/07/1924 | |
| FRANCE | Signature | 24/09/1923 | |
| FRANCE | Reservation | 24/09/1923 | |
| FRANCE | Ratification | 07/06/1928 | |
| FRANCE | Re-Application | 15/04/1954 | |
| GAMBIA THE | Succession | 01/04/1970 | |
| GERMAN DEMOCRATIC REPUBLIC | Re-Application | 31/01/1974 | 04/04/1958 |
| GERMANY | Signature | 24/09/1923 | |
| GERMANY | Ratification | 05/11/1924 | |
| GERMANY | Statement | 01/01/1952 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1952 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/04/1952 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1953 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/09/1953 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/10/1953 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 05/10/1953 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/04/1954 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 15/04/1954 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 20/07/1955 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 13/01/1976 | |
| Gibraltar | Extension | 12/03/1926 | |
| Gold Coast | Extension | 12/03/1926 | |
| GREECE | Signature | 24/09/1923 | |
| GREECE | Reservation | 24/09/1923 | |
| GREECE | Ratification | 26/05/1926 | |
| GREECE | Re-Application | 01/10/1953 | |
| Grenada | Extension | 12/03/1926 | |
| Hong Kong | Extension | 02/04/1965 | |
| Hong Kong | Notification | 10/06/1997 | 01/07/1997 |
| India | Signature | 09/04/1935 | |
| India | Ratification | 23/10/1937 | |
| Indies | Extension | 24/09/1923 | |
| Indies | Reservation | 24/09/1923 | |
| Indies | Withdrawal | 12/04/1940 | |
| Irak | Extension | 12/03/1926 | |
| IRELAND, REPUBLIC OF | Signature | 29/11/1956 | |
| IRELAND, REPUBLIC OF | Ratification | 11/03/1957 | |
| ISRAEL | Ratification | 13/12/1951 | |
| ITALY | Signature | 24/09/1923 | |
| ITALY | Ratification | 28/07/1924 | |
| ITALY | Notification | 19/04/1926 | |
| ITALY | Re-Application | 01/01/1952 | |
| Jamaica | Extension | 12/03/1926 | |
| JAPAN | Signature | 24/09/1923 | |
| JAPAN | Declaration | 24/09/1923 | |
| JAPAN | Ratification | 04/06/1928 | |
| JAPAN | Extension | 26/02/1929 | |
| Kenya | Extension | 12/03/1926 | |
| KENYA | Succession | 01/04/1970 | |
| KOREA REPUBLIC OF | Signature | 04/03/1968 | |
| LATVIA | Signature | 12/09/1924 | |
| LATVIA | Reservation | 12/09/1924 | |
| Leeward Islands | Extension | 12/03/1926 | |
| LIECHTENSTEIN | Signature | 13/05/1937 | |
| LIECHTENSTEIN | Reservation | 13/05/1937 | |
| LITHUANIA | Signature | 24/09/1923 | |
| LUXEMBOURG | Re-Application | 01/01/1905 | |
| LUXEMBOURG | Signature | 14/09/1929 | |
| LUXEMBOURG | Reservation | 14/09/1929 | |
| MACEDONIA THE FYR OF | Succession | 10/03/1994 | 17/09/1991 |
| Malta | Extension | 12/03/1926 | |
| MALTA | Succession | 16/08/1966 | 21/09/1964 |
| Mauritius | Extension | 12/03/1926 | |
| MAURITIUS | Succession | 18/07/1969 | 12/03/1968 |
| MONACO | Signature | 29/03/1924 | |
| MONACO | Reservation | 29/03/1924 | |
| MONACO | Ratification | 08/02/1927 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| NETHERLANDS THE | Signature | 20/09/1924 | |
| NETHERLANDS THE | Reservation | 20/09/1924 | |
| NETHERLANDS THE | Ratification | 06/08/1925 | |
| NETHERLANDS THE | Withdrawal | 22/02/1938 | |
| NETHERLANDS THE | Re-Application | 05/10/1953 | 01/01/1953 |
| New Zealand | Signature | 11/03/1926 | |
| New Zealand | Ratification | 09/06/1926 | |
| Newfoundland (UK) | Extension | 22/01/1925 | |
| NICARAGUA | Signature | 24/09/1923 | |
| Northern Rhodesia | Extension | 12/03/1926 | |
| NORWAY | Signature | 05/08/1924 | |
| NORWAY | Reservation | 02/09/1927 | |
| Palestine | Extension | 12/03/1926 | |
| PANAMA | Signature | 24/09/1923 | |
| PARAGUAY | Signature | 29/09/1924 | |
| PERU | Signature | 15/05/1930 | |
| POLAND | Signature | 22/09/1925 | |
| POLAND | Reservation | 22/09/1925 | |
| POLAND | Ratification | 26/06/1931 | |
| PORTUGAL | Signature | 04/09/1930 | |
| PORTUGAL | Reservation | 04/09/1930 | |
| PORTUGAL | Ratification | 10/12/1930 | |
| ROUMANIA | Signature | 06/03/1924 | |
| ROUMANIA | Reservation | 06/03/1924 | |
| ROUMANIA | Ratification | 12/03/1925 | |
| SALVADOR | Signature | 13/09/1924 | |
| SIAM | Signature | 19/05/1925 | |
| SIAM | Reservation | 19/05/1925 | |
| SIAM | Ratification | 03/09/1930 | |
| SIAM | Reservation | 03/09/1930 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| Southern Rhodesia | Extension | 18/12/1924 | |
| SPAIN | Signature | 30/08/1924 | |
| SPAIN | Reservation | 30/08/1924 | |
| SPAIN | Ratification | 29/07/1926 | |
| St Helena | Extension | 29/07/1926 | |
| St Lucia | Extension | 12/03/1926 | |
| St Vincent | Extension | 12/03/1926 | |
| Surinam | Extension | 24/09/1923 | |
| Surinam | Reservation | 24/09/1923 | |
| Surinam | Withdrawal | 12/04/1940 | |
| SWITZERLAND | Signature | 10/09/1924 | |
| SWITZERLAND | Ratification | 14/05/1928 | |
| Tanganyika | Extension | 17/06/1926 | |
| TANZANIA | Succession | 01/04/1970 | |
| The Gambia | Extension | 12/03/1926 | |
| Transjordan | Extension | 12/03/1926 | |
| UNITED KINGDOM | Signature | 24/09/1923 | |
| UNITED KINGDOM | Ratification | 27/09/1924 | |
| URUGUAY | Signature | 24/09/1923 | |
| Western Samoa | Extension | 11/03/1926 | |
| YUGOSLAVIA | Signature | 13/03/1959 | |
| YUGOSLAVIA | Ratification | 13/03/1959 | |
| YUGOSLAVIA | Succession | 12/03/2001 | 27/04/1992 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |
| ZAMBIA | Succession | 01/04/1970 | |
| Zanzibar | Extension | 12/03/1926 | |
| ZIMBABWE | Succession | 24/09/1923 |