| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Signature | 05/06/1926 | |
| ALBANIA | Ratification | 17/03/1932 | |
| ALBANIA | Denunciation | 30/06/1999 | 30/06/2000 |
| ARGENTINA | Signature | 05/06/1926 | |
| ARGENTINA | Ratification | 14/03/1950 | |
| AUSTRALIA | Signature | 05/06/1926 | |
| AUSTRALIA | Ratification | 18/04/1931 | |
| AUSTRALIA | Declaration | 15/06/1973 | |
| AUSTRALIA | Declaration | 21/06/1973 | |
| AUSTRALIA | Denunciation | 02/04/2002 | 02/04/2003 |
| AUSTRIA | Signature | 05/06/1926 | |
| AUSTRIA | Ratification | 29/12/1927 | |
| BANGLADESH | Accession | 22/06/1972 | |
| BELGIUM | Signature | 05/06/1926 | |
| BELGIUM | Ratification | 15/02/1928 | |
| BELGIUM | Denunciation | 14/08/1998 | 14/08/1999 |
| BRAZIL | Signature | 05/06/1926 | |
| BRAZIL | Ratification | 18/06/1965 | |
| BULGARIA | Signature | 05/06/1926 | |
| BULGARIA | Ratification | 29/11/1929 | |
| BURMA | Succession | 14/01/1928 | |
| COLOMBIA | Signature | 05/06/1926 | |
| COLOMBIA | Ratification | 20/06/1933 | |
| CUBA | Signature | 05/06/1926 | |
| CUBA | Ratification | 07/09/1954 | |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 05/06/1926 | |
| CZECHOSLOVAKIA | Ratification | 25/05/1928 | |
| DENMARK | Signature | 05/06/1926 | |
| DENMARK | Ratification | 18/05/1955 | |
| FINLAND | Signature | 05/06/1926 | |
| FINLAND | Ratification | 05/04/1929 | |
| FRANCE | Signature | 05/06/1926 | |
| FRANCE | Ratification | 13/01/1932 | |
| FRANCE | Declaration | 13/01/1932 | |
| Guernsey | Extension | 16/09/1927 | |
| HUNGARY | Signature | 05/06/1926 | |
| HUNGARY | Ratification | 03/02/1931 | |
| India | Extension | 14/01/1928 | |
| INDIA | Ratification | 14/01/1928 | |
| IRELAND, REPUBLIC OF | Signature | 05/06/1926 | |
| IRELAND, REPUBLIC OF | Ratification | 05/07/1930 | |
| Isle of Man | Extension | 16/09/1927 | |
| JAPAN | Signature | 05/06/1926 | |
| JAPAN | Ratification | 08/10/1928 | |
| Jersey | Extension | 16/09/1927 | |
| LUXEMBOURG | Signature | 05/06/1926 | |
| LUXEMBOURG | Ratification | 16/04/1928 | |
| LUXEMBOURG | Denunciation | 02/06/1998 | 02/06/1999 |
| MALTA | Accession | 09/06/1988 | |
| MEXICO | Signature | 05/06/1926 | |
| MEXICO | Ratification | 09/03/1938 | |
| NETHERLANDS THE | Signature | 05/06/1926 | |
| NETHERLANDS THE | Ratification | 13/09/1927 | |
| NEW ZEALAND | Signature | 05/06/1926 | |
| NEW ZEALAND | Ratification | 29/03/1938 | |
| NEW ZEALAND | Denunciation | 02/06/1982 | 02/06/1983 |
| NICARAGUA | Signature | 05/06/1926 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| NORWAY | Signature | 05/06/1926 | |
| NORWAY | Ratification | 28/01/1957 | |
| PAKISTAN | Succession | 14/01/1928 | |
| PANAMA | Accession | 19/06/1970 | |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| SWEDEN | Signature | 05/06/1926 | |
| SWEDEN | Ratification | 15/10/1929 | |
| SWEDEN | Reservation | 15/10/1929 | |
| UNITED KINGDOM | Signature | 05/06/1926 | |
| UNITED KINGDOM | Ratification | 27/08/1927 | 16/09/1927 |
| UNITED KINGDOM | Reservation | 27/08/1927 | |
| UNITED KINGDOM | Declaration | 16/09/1927 | |
| UNITED KINGDOM | Ratification | 16/09/1927 | |
| UNITED KINGDOM | Declaration | 14/01/1928 | |
| URUGUAY | Signature | 05/06/1926 | |
| URUGUAY | Ratification | 06/06/1933 | |
| VENEZUELA | Signature | 05/06/1926 | |
| VENEZUELA | Ratification | 20/11/1944 | |