Incoming cover from Argentina franked on front with 2 x 1939 5c carmine UPU issue (SG 679) tied by BUENOS AIRES machine cancel dated 19 ABR 1939. Addressed to 'Otto Vierck, Vapor General Osorio, Montevideo, Uruguay'. The cover has been taxed on arrival with various notations in manuscript and added 1938 4c bright violet 'Postage Due' issue (SG D798) tied by large 'SOBRETASA! STRAFPORTO $0.04 CENTESIMOS' marking in purple with value added in manuscript. Various other cds's also on reverse including 'TASA' MONTEVIDEO cds.