| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| FRANCE | Signature | 31/10/1861 | |
| FRANCE | Ratification Dated | 07/11/1861 | |
| FRANCE | Ratification | 15/11/1861 | |
| SPAIN | Signature | 31/10/1861 | |
| SPAIN | Ratification Dated | 09/11/1861 | |
| SPAIN | Ratification | 15/11/1861 | |
| UNITED KINGDOM | Signature | 31/10/1861 | |
| UNITED KINGDOM | Ratification | 01/11/1861 | |
| UNITED KINGDOM | Ratification Dated | 01/11/1861 | |
| UNITED KINGDOM | Ratification | 15/11/1861 |