Cover franked with 1915 1c grey and 2c vermilion 'Presidents Palace' issue with '1915' overprint and 'OFICIAL' overprint both in black (SG O685/686) tied by 'Lines' cancel with large 'MINISTERIO DE RELACIONES EXTERIORES SAN SALVADOR official 'Arms' cachet in purple on reverse. Addressed to SWITZERLAND with arrival cds also on reverse.