The 20th Anniversary of the UNESCO 1967
Now showing: Argentina - Postage stamps - 1967 - The 20th Anniversary of the UNESCO - 1 stamps.
1967
The 20th Anniversary of the UNESCO
18. February WM: 9 Design: Héctor Viola. Engraving: Casa de Moneda S.E., Buenos Aires. Perforation: 13½
![[The 20th Anniversary of the UNESCO, type YA]](https://www.stampworld.com/media/catalogue/Argentina/Postage-stamps/YA-s.jpg)
