Airmail, 1929 (May 22) Panama to Chiriqui First Flight Cover, 2c entire bearing 10c orange, double overprint (C2b) tied by "Agencia Postal Panama, May 22 1929" duplexes to Chiriqui, appropriate flight cachet handstamps and David (5.23) arrival backstamp, accompanied by second cover 1930 (Jul. 25) on 10c registration envelope bearing C1a inverted overprint and C5 from Panama to Ancon C.Z. flight cover, Very Fine pair. Estimate  $150 - 200. $0 (Image)