| Cash on Delivery Agreement | 14.9.1994 |
| Giro Agreement | 14.9.1994 |
| Postal Parcels Agreement | 14.9.1994 |
| Universal Postal Convention | 14.9.1994 |
| General Regulations of the Universal Postal Union | 14.9.1994 |
| Fifth Additional Protocol to the Constitution of the Universal Postal Union | 14.9.1994 |
| Agreement concerning Postal Parcels with Final Protocol, Detailed Regulations and Final Protocol to Detailed Regulations | 10.7.1964 |
| Agreement concerning Insured Letters and Boxes with Final Protocol and Detailed Regulations 10.7.1964 | |
| Universal Postal Convention, with Final Protocol and Detailed Regulations | 10.7.1964 |
| Constitution of the Universal Postal Union, with Final Protocol | 10.7.1964 |
| Agreement concerning Postal Parcels, with Final Protocol and Detailed Regulations | 3.10.1957 |
| Agreement concerning Insured Letters and Boxes, with Final Protocol and Detailed Regulations | 3.10.1957 |
| Universal Postal Convention, with Final Protocol, Detailed Regulations, Provisions Concerning Air Mail and Final Protocol to the Provisions Concerning Air Mail | 3.10.1957 |