The 50th Anniversary of the National Institute of Astrophysics 2021
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2021
The 50th Anniversary of the National Institute of Astrophysics
11. November WM: None Design: Nanc Torres Lopez Engraving: Talleres de Impresión de Estampillas y Valores. Perforation: 10
![[The 50th Anniversary of the National Institute of Astrophysics, type EYB]](https://www.stampworld.com/media/catalogue/Mexico/Postage-stamps/EYB-s.jpg)
