| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BRITISH EMPIRE | Signature | 24/07/1923 | |
| FRANCE | Signature | 24/07/1923 | |
| GREECE | Signature | 24/07/1923 | |
| ITALY | Signature | 24/07/1923 | |
| JAPAN | Signature | 24/07/1923 | |
| ROUMANIA | Signature | 24/07/1923 | |
| TURKEY | Signature | 24/07/1923 | |
| UNITED KINGDOM | Signature | 24/07/1923 |