First Flight cover franked with 1902 strip of five 5c black & blue, 1922 25c on 30c black & vermilion and 1924 1p on 1p 50c blue & orange (SG 118a, 185A & 200) tied by GUATEMALA CITY cds dated JUL 30 1926 flown on the GUATEMALA CITY - ESQUIPULAS inaugural flight with three line 'Via Primer Correo Aereo GUATEMALA - ESQUIPULAS' cachet in purple and additional boxed 'PRIMER CORREO AEREO cachet in purple on stamps. ESQUIPULAS arrival cds on front & GUATEMALA transit cds on reverse. A rare flight only 140 covers carried. (Muller #4, Goodman #AM5a)