This 1954 Chilean postage stamp, valued at 40 pesos, honors the 50th anniversary of the death of Don Diego Barros Arana (1830–1907), a leading Chilean historian, educator, and diplomat. Printed by the Casa de Moneda de Chile, the design presents a finely engraved portrait of Barros Arana in deep blue, emphasizing his scholarly character. The stamp reflects Chile’s mid-century tradition of celebrating national intellectuals and cultural figures, making it a notable addition to historical and biographical collections of Latin American philately.