| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | |||
| BELGIUM | |||
| FRANCE | |||
| GERMAN EMPIRE | Accession | 04/03/1878 | |
| ITALY | |||
| MOROCCO | |||
| NETHERLANDS THE | |||
| PORTUGAL | |||
| RUSSIA | Accession | 31/05/1899 | |
| SPAIN | |||
| SWEDEN | |||
| UNITED KINGDOM | Signature | 31/05/1865 | |
| UNITED KINGDOM | Ratification | 23/06/1865 | |
| UNITED STATES OF AMERICA |