Portugal
Viser nå: Portugal - Postfrimerker (1853 - 2024) - 1 frimerker.
1979
Noise Protection
14. March VM: Ingen Design: Duarte Nuno Simões. Gravering: Imprensa Nacional Casa da Moeda. Perforering: 13½
![[Noise Protection, type ZH]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/ZH-s.jpg)
![[Noise Protection, type ZI]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/ZI-s.jpg)
![[Noise Protection, type ZJ]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/ZJ-s.jpg)
