Lot no. 970

10 c. multicoloured imperforate vignette "Clouds and small Biplane" with additional franking 3c. red tied by "CCNA / Barranquilla" oval cachet and bold "CORREO AEREO" datestamp to First Flight cover to Baranquilla, horizontal fold not affecting adhesive, slightly shortened and openend out for display, a very rare cover with only 12 known, signed Kessler, certificate RPSL (1996)