Cover franked with single 1915 4c brown 'Presidente' issue (SG 159) tied by ANTOFAGASTA cds. Underpaid by 6c (the inland rate was 10c) and taxed in ANTOFAGASTA with red crayon 'X' and boxed 'MULTADA CTS 12 ANTOFAGASTA' cachet in black on front indicating double deficiency due. Addressed to FRUTILLAR.