Info| Date | 1974, 20 VI |
|---|---|
| Value | 5 ยข |
| Catalog no. | Mi 489 Sc 337 SG 488 Y&T -- |
| Topic | Universal Postal Union |
| Occasion | 17th Congress of the UPU |
| Description | The stamp is dedicated to the 17th congress of the UPU, that took place in Lausanne, Switzerland in 1974. The congresses takes place every 4 years.In the background the names of the participating countries are mentioned. Among them Poland. |
