| International Convention Concerning the use of Broadcasting in the Cause of Peace | 23.9.1936 |
| International Convention on Stamp Laws in Connection with Cheques, with Protocol | 19.3.1931 |
| International Convention on the Stamp Laws in Connection with Bills of Exchange and Promissory Notes, with Protocol | 7.6.1930 |
| International Convention on Certain Questions Relating to the Conflict of Nationality Laws | 12.4.1930 |
| International Protocol Relating to the Certain Case of Statelessness | 12.4.1930 |
| International Protocol Concerning Statelessness | 12.4.1930 |
| International Protocol Relating to Military Obligations in Certain Cases of Double Nationality | 12.4.1930 |
| International Convention for the Suppression of Counterfeiting Currency, with Protocol | 20.4.1929 |
| International Convention on the Execution of Foreign Arbitral Awards | 26.9.1927 |
| Convention and Statute on the International Regime of Maritime Ports | 9.12.1923 |
| International Convention Relating to the Simplification of Customs Formalities | 3.11.1923 |
| Protocol on Arbitration Clauses | 23.9.1923 |
| Declaration Recognising the Right to a Flag of States having no Sea-Coast | 20.4.1921 |
| Additional Protocol to the Convention on the Regime of Navigable Waterways of International Concern of 20 April 1921 | 20.4.1921 |
| Convention and Statute on the Regime of Navigable Waterways of International Concern | 20.4.1921 |
| Convention and Statute on Freedom of Transit | 20.4.1921 |