UNESCO
Now showing: UNESCO - Postage stamps (1961 - 2019) - 3 stamps.
8. March WM: None Sheetsize: 50 Design: Pierre Béquet. Perforation: 13
13. February WM: None Sheetsize: 50 Design: Pierre Béquet. Perforation: 13
15. November WM: None Sheetsize: 50 Design: Pierre Béquet. Perforation: 13