The International Stamp Exhibition in Philadelphia 1976
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1976
The International Stamp Exhibition in Philadelphia
29. Svibanj WM: Ništa Veličina lista: 100 Dizajn: Serviços Artísticos dos CTT Graviranje: Litografia Nacional Perforacija: 14½
![[The International Stamp Exhibition in Philadelphia, Tip UP]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UP-s.jpg)
![[The International Stamp Exhibition in Philadelphia, Tip UQ]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UQ-s.jpg)
![[The International Stamp Exhibition in Philadelphia, Tip UR]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/UR-s.jpg)
