A striking mid-20th century issue celebrating the Tonantzintla Astrophysical Observatory and Mexico’s early contributions to astronomical research.
The design features the dramatic “Black Cloud in Orion,” rendered in deep blue and violet gravure tones for a cosmic, night-sky effect.
Vertical inscriptions frame the observatory name, while bold “CORREOS MEXICO” typography anchors the classic period style.
Its scientific theme makes it popular with both space/topical collectors and Latin American specialists.
A compact low-value definitive that adds strong visual contrast to any astronomy or observatory collection.