Viser nå: Portugal - Postfrimerker (1970 - 1979) - 7 frimerker.
4. May VM: Ingen Design: Louis le Brocquy. Gravering: Casa da Moeda de Portugal. Perforering: 13¼
![[EUROPA Stamps, type NI]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NI-s.jpg)
![[EUROPA Stamps, type NI1]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NI1-s.jpg)
![[EUROPA Stamps, type NI2]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NI2-s.jpg)
5. June VM: Ingen Design: Antonio Lino Gravering: Casa da Moeda Perforering: 13½
![[Opening of the Oil Refinery in Porto, type NJ]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NJ-s.jpg)
![[Opening of the Oil Refinery in Porto, type NK]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NK-s.jpg)
![[Opening of the Oil Refinery in Porto, type NJ1]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NJ1-s.jpg)
![[Opening of the Oil Refinery in Porto, type NK1]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/NK1-s.jpg)
Viser nå: Portugal - Postfrimerker (1970 - 1979) - 7 frimerker.
4. May VM: Ingen Design: Louis le Brocquy. Gravering: Casa da Moeda de Portugal. Perforering: 13¼
5. June VM: Ingen Design: Antonio Lino Gravering: Casa da Moeda Perforering: 13½