UNESCO
Now showing: UNESCO - Postage stamps (1961 - 2019) - 2 stamps.
23. October WM: None Sheetsize: 50 Design: Claude Robert Ernest Durrens y Rolf Ibach. Perforation: 13
14. October WM: None Sheetsize: 50 Design: Claude Robert Ernest Durrens y Rolf Ibach. Perforation: 13