European Security and Cooperation Conference, Helsinki 4 zł — Poland, 1975
European Security and Cooperation Conference, Helsinki (Poland, 1975), face value 4 zł. Photo, catalogue value, details and photo identification.
- Issue date
- 1975
- Face value
- 4 zł
- Colors
- Multicolor
- Print run
- 3,540,000
- Yvert
- PL 2229
- Michel
- PL 2391
- Stanley Gibbons
- PL 2379
- Scott
- PL 2109