| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Signature | 30/03/1856 | |
| AUSTRIA | Ratification | 27/04/1856 | |
| FRANCE | Signature | 30/03/1856 | |
| FRANCE | Ratification | 27/04/1856 | |
| PRUSSIA | Signature | 30/03/1856 | |
| PRUSSIA | Ratification | 27/04/1856 | |
| RUSSIA | Signature | 30/03/1856 | |
| RUSSIA | Ratification | 27/04/1856 | |
| SARDINIA | Signature | 30/03/1856 | |
| SARDINIA | Ratification | 27/04/1856 | |
| TURKEY | Signature | 30/03/1856 | |
| TURKEY | Ratification Dated | 14/04/1856 | |
| TURKEY | Ratification | 27/04/1856 | |
| UNITED KINGDOM | Signature | 30/03/1856 | |
| UNITED KINGDOM | Ratification | 15/04/1856 | |
| UNITED KINGDOM | Ratification Dated | 15/04/1856 | |
| UNITED KINGDOM | Ratification | 27/04/1856 | |