PHILIPPINES, 1943, 2c Blue,
Free Philippines Guerilla Postal Service (Unlisted). Tied by cancel and
used with 2c No. 411 on 2c entire, cancelled by "Esperanza, Agusan
Philippines Dec. 25 7 AM 1943" duplex and addressed to Insular Treasurer of
the Philippines in Washington D.C., purple oval "Posted in the Free
Philippines Mindanao Guerilla Area 25 DEC 1943", matching censored
handstamp and boxed "We Depend Upon Gen. MacArthurs Pledge to Return"
handstamp, with original contents of money order and greeting
cardVERY FINE. A RARE USAGE OF THE 2-CENTAVO GUERILLA POSTAL SERVICE ISSUE. THIS MAY BE THE FINEST KNOWN COVER.
During World War II, this stamp was issued for use on the island of Mindanao. Only 500 stamps were printed. 36 covers are known, but many are unaddressed. This cover, actually used postally, is a great rarity.
Accompanied by an American Philatelist article discussing this issue. (Image)