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1944 MAY 22: PUERTO PRINCESA, PALAWAN to MANILA.
Franked
with 5c Kalayaan imperforate issue with typed "O.B." for proper single
letter rate.
Puerto Princesa Post Office re-opened on December 21, 1942. Typed "O.B." (Official Business) contrary to regulations
as the Japanese
VERY SCARCE ISSUE
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