Printed 'Por Aeronave "Graf Zeppelin"' cover franked with 1928 3c olive bistre and 20c chocolate 'Artigas' issue and 1930 30c myrtle 'Pegasus' issue (SG 546, 558 & 667) tied by MONTEVIDEO cancel dated OCT 19 1931. Flown on Zeppelin LZ127 on the third 'Sudamerikafahrt' with 'CORREOS - URUGUAY Servicio Aereo Transatlantico CONDOR - ZEPPELIN 19 - X - 1931' cachet in purple on front. Addressed to GERMANY with FRIEDERICHASHAFEN arrival cds on reverse. (Sieger #137)