Panoramica Nocturna de la ciudad.
(Panoramic night view of the city)
This is postmarked in 1973 with a Colombia 1969 stamp.
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Medellín is the second-largest city in Colombia and the capital of the department of Antioquia. It is located in the Aburrá Valley, a central region of the Andes Mountains in South America.
Colombia stamp - Airmail
XIII Congreso Latindamericano de Neurocirugia
(The 13th Latin-American Neurological Congress, Bogota)