| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| MECKLENBURG-SCHWERIN | Accession | 09/01/1869 | |
| PRUSSIA | Signature | 16/08/1865 | |
| PRUSSIA | Ratification Dated | 20/02/1866 | |
| PRUSSIA | Ratification | 24/02/1866 | |
| UNITED KINGDOM | Signature | 16/08/1865 | |
| UNITED KINGDOM | Ratification Dated | 16/02/1866 | |
| UNITED KINGDOM | Ratification | 24/02/1866 |