Portugal
Now showing: Portugal - Postage stamps (1853 - 2024) - 1 stamps.
1973
Conference for Economic Productivity
11. April WM: None Design: José Cândido Engraving: Lito Nacional Perforation: 14½
![[Conference for Economic Productivity, type QQ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Portugal/Postage-stamps/QQ-s.jpg)
![[Conference for Economic Productivity, type QR]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Portugal/Postage-stamps/QR-s.jpg)
![[Conference for Economic Productivity, type QS]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Portugal/Postage-stamps/QS-s.jpg)
