Info| Date | 1985, 02 I |
|---|---|
| Value | 50, 50, 50 CT |
| Catalog no. | Mi 3332, BL150 |
| Topic | OSCE |
| Occasion | 10th anniversary of the Helsinki Treaty |
| Description | Sheetlet containing 3 stamps. On the centre stamp the map of Europe and peace symbols. On the other stamps the flags from the participating countries, among them Poland. |
