Info| Date | 1958, 26 V |
|---|---|
| Value | 40 Kon |
| Catalog no. | Mi 2084I, 2084II Sc 2067, 2067a SG 2204, 2205 Y&T 2051, 2051A |
| Topic | COMECON |
| Occasion | Ministers conference of post and telecom of COMECON-countries |
| Description | Flags of the participating countries, among them Poland. On 2804 I the flag of Czechoslovakia is shown upside down. 2804 II (right hand side)shows this flag right. This stamp was issued in November 1958. |
