5c red 'San Martin' postal stationery card (H&G 46) used with added 3 x 1930 50c grey black with 'ZEPPELIN' overprint in blue (SG 383) tied by AEREO POSTAL B.A. cds's dated 21 MAY 1930. Flown by LZ 127 on the Europe - Pan-America Round Flight with large diamond cachet in purple on front. Addressed to Germany with FRIEDRICHSHAFEN arrival cds dated 6.6. 1930 on reverse.