| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Signature | 15/04/1856 | |
| AUSTRIA | Ratification Dated | 21/04/1856 | |
| AUSTRIA | Ratification | 29/04/1856 | |
| FRANCE | Signature | 15/04/1856 | |
| FRANCE | Ratification Dated | 22/04/1856 | |
| FRANCE | Ratification | 29/04/1856 | |
| UNITED KINGDOM | Signature | 15/04/1856 | |
| UNITED KINGDOM | Ratification | 19/04/1856 | |
| UNITED KINGDOM | Ratification Dated | 19/04/1856 | |
| UNITED KINGDOM | Ratification | 29/04/1856 |