Silhouetted against a cobalt sky with a towering saguaro cactus as his only companion, a solitary Mexican guard crouches on a rust-red boulder, rifle held at ready, his broad sombrero and vivid orange serape with its turquoise and gold Greek-key border radiating a heroic, cinematic energy that feels more myth than documentary — yet this image is the work of Luis Márquez, Mexico's master of staged ethnographic photography, whose lens shaped how the world imagined Mexico for decades. Published by Publicaciones Fischgrund under the "Series Arco Iris" imprint — the same prestigious series that distributed Diego Rivera's pictorial maps — card number 25 is an evocative piece of mid-century Mexican visual culture. The reverse is clean and unposted, with the full Fischgrund/Sánchez H. y Cía. printer credit and a "Printed in Mexico" colophon, though notably without the year date present on some Arco Iris cards, suggesting a slightly later pressing within the same series run.