1911 Post Office, 25c blue and black, center inverted, used with an upright example on cover addressed to Monsieur Gaston Soupey, Secretaire de la Legation de France in Guatemala, cancelled and tied to envelope with boxed violet Servicio Express Jun 1 1915 pmk with Salida 3 PM in manuscript and "Recibida a" (no manuscript time written) hand stamps on front; additionally franked on reverse with Guatemala 6c Temple of Minerva (Scott's No.117), fine, with 2007 Alex Rendon certificate. According to an article by Brian Moorhouse "Not only is this cover a unique example of the 25c inverted center on cover, it may also be the earliest recorded example of a franked Express Delivery cover." A great rarity from Guatemala (Cat No. 141,141a) (Image)

Est.$5,000