| 25 November 1927 |
1 January 1929 |
Convention regarding Radiotelegraphy [with General Regulations and Supplementary Regulation] |
| 23 May 1939 |
1 July 1940 |
Universal Postal Convention, with Final Protocol, Regulations of Execution and Provisions concerning the Transportation of Regular Mails by Air, with Final Protocol. |
| 23 May 1939 |
1 July 1940 |
Agreement and Final Protocol regarding Parcel Post |
| 23 May 1939 |
|
Convention and Final Protocol regarding the Universal Postal Union (with Regulations and Airmail Provisions) |
| 11 July 1952 |
1 July 1953 |
Universal Postal Convention [together with Final Protocol and Provisions for Letters by Air Mail with Final Protocol] |
| 11 July 1952 |
1 July 1953 |
Agreement concerning Insured Letters and Boxes (together with Final Protocol) |
| 3 October 1957 |
1 April 1959 |
Universal Postal Convention [together with Final Protocol, Detailed Regulations and Annexes, Provisions concerning Air Mail with their Final Protocol and Annexes] |
| 3 October 1957 |
1 April 1959 |
Agreement concerning Postal Parcels |
| 3 October 1957 |
1 April 1959 |
Agreement concerning Insured Letters and Boxes |
| 10 July 1964 |
1 January 1966 |
Agreement Concerning Insured Letters and Boxes [with Final Protocol and Detailed Regulations] |
| 10 July 1964 |
1 January 1966 |
Universal Postal Convention |
| 10 July 1964 |
1 January 1966 |
Constitution of the Universal Postal Union [with Final Protocol, General Regulations and Final Protocol thereto] |
| 10 July 1964 |
1 January 1966 |
Agreement concerning Postal Parcels [with Final Protocol, Detailed Regulations and Final Protocol thereto] |
| 14 November 1969 |
1 July 1971 |
Additional Protocol to the Constitution of the Universal Postal Union (with Declarations, General Regulations, Final Protocol and Rules of Procedure of Congresses) |
| 14 November 1969 |
1 July 1971 |
Additional Protocol to the Constitution of the Universal Postal Union (with Declarations, General Regulations, Final Protocol and Rules of Procedure of Congresses) |
| 14 November 1969 |
1 July 1971 |
Postal Parcels Agreement (with Final Protocol and Detailed Regulations] |
| 14 November 1969 |
1 July 1971 |
Universal Postal Convention (with Final Protocol and Detailed Regulations) |