Issued by Bolivia in 1947, this airmail stamp commemorates the historic meeting between Presidents Enrique Hertzog of Bolivia and Juan D. Perón of Argentina held at Yacuiba on 23 October 1947. The design features the national coat of arms of Bolivia alongside Argentina’s emblem framed in laurel, symbolizing diplomatic unity and cooperation. Inscribed “Aéreo – Entrevista de Presidentes”, this Bs. 290 blue issue was printed by Lito. Unidas, La Paz. A striking mid-20th century Latin American political commemorative, desirable for both airmail and diplomatic-themed collections.