Cover franked with single 1940 4c orange yellow with 'EXPRESO' overprint in red (SG E411) tied by fine strike of OFICINA DE COMMUNICACIONES GUATALON SUCHITEPEQUEZ cds dated 1 ABR 1947 with fine second strike alongside. Addressed to USA with illustrated 'Grand Central Palace New York Stamp Exhibition 1847-1947' CINDERELLA label on reverse. Interesting normal use of the Express stamp.