Airmail cover franked with 1924 2c red and 6c blue and 1930 strip of three 15c scarlet AIR issue (SG 751, 754 & 775) tied by CORREO AEREO EL SALVADOR 'Airplane' cancels with SAN SALVADOR cds dated 16 MAY 1933 alongside. Addressed to 'Herrn Zahlmeister H Stuermann, M/S "San Francisco" c/o Hapag-Lloyd Panama Canal Agency, 5067, P.O.Box, Cristobal, C.Z.' with CRISTOBAL arrival cds on reverse.