Airmail cover franked with 1949 60c grey olive & 1953 5c orange & black postage issues (SG 1130 & 1185) plus 1954 10c on 3c dull blue & 50c on 3c dull blue 'Semana de Communicaciones' overprint issue all tied by boxed MANAGUA cds's. Addressed to USA with US Firms arrival cachet on front.