Lot 1070
Black machine overprints on 1923 issue: Panama, 10 and 60c. and 2p. orange in combination with Canal Zone 1-2c. as single and 10c. as pair, tied by cds. "SERVICEO TRANSPORTES AEREOS -4.VII.1927" resp. duplex mark "ANCON JUL 29" to large front of cover to Medellin, Agency cachet on front, folded several times and Canal Zone franking some faults, scarce combination
