The International Stamp Exhibition in Philadelphia 1976
Now showing: Portugal - Postage stamps - 1976 - The International Stamp Exhibition in Philadelphia - 3 stamps.
1976
The International Stamp Exhibition in Philadelphia
29. May WM: None Sheetsize: 100 Design: Serviços Artísticos dos CTT Engraving: Litografia Nacional Perforation: 14½
![[The International Stamp Exhibition in Philadelphia, type UP]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UP-s.jpg)
![[The International Stamp Exhibition in Philadelphia, type UQ]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UQ-s.jpg)
![[The International Stamp Exhibition in Philadelphia, type UR]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UR-s.jpg)
