Airmail cover franked with 1953 1c ultramarine & black (SG 523) with complete small 'R Estrada S' SIGNATURE CONTROL marking of 'Francisco Morazan' province plus 1956 3c & 8c without overprints (SG 553 & 556) all tied by 'Lines' cancel with TEGUCIGALPA cds alongside. Addressed to USA.