1931
Manila to Davao
Southern
Islands Inspection Tour Unrecorded Flight
MAY 11:
MANILA TO DAVAO
Backstamped
DAVAO, DAVAO, P.I. / REC'D. / MAY 21 8AM 1931.
With proper
16c franking.
This is the
4th cover that I have seen, first documented by David G. Chiong
in his collection
/ exhibit
PHILIPPINE AIR MAILS.
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