| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Signature | 11/05/1867 | |
| AUSTRIA | Ratification Dated | 26/05/1867 | |
| AUSTRIA | Ratification | 31/05/1867 | |
| BELGIUM | Signature | 11/05/1867 | |
| BELGIUM | Ratification Dated | 24/05/1867 | |
| BELGIUM | Ratification | 31/05/1867 | |
| FRANCE | Signature | 11/05/1867 | |
| FRANCE | Ratification Dated | 18/05/1867 | |
| FRANCE | Ratification | 31/05/1867 | |
| ITALY | Signature | 11/05/1867 | |
| ITALY | Ratification Dated | 27/05/1867 | |
| ITALY | Ratification | 31/05/1867 | |
| LUXEMBOURG | Signature | 11/05/1867 | |
| LUXEMBOURG | Ratification Dated | 25/05/1867 | |
| LUXEMBOURG | Ratification | 31/05/1867 | |
| NETHERLANDS THE | Signature | 11/05/1867 | |
| NETHERLANDS THE | Ratification Dated | 25/05/1867 | |
| NETHERLANDS THE | Ratification | 31/05/1867 | |
| PRUSSIA | Signature | 11/05/1867 | |
| PRUSSIA | Ratification Dated | 16/05/1867 | |
| PRUSSIA | Ratification | 31/05/1867 | |
| RUSSIA | Signature | 11/05/1867 | |
| RUSSIA | Ratification Dated | 21/05/1867 | |
| RUSSIA | Ratification | 31/05/1867 | |
| UNITED KINGDOM | Signature | 11/05/1867 | |
| UNITED KINGDOM | Ratification Dated | 21/05/1867 | |
| UNITED KINGDOM | Ratification | 31/05/1867 | |