P=have O=don’t have it
The Territory of Guam is an island in the Western Pacific Ocean and is an organized unincorporated
territory of the United States. Its indigenous people are
the Chamorros, who first inhabited the island
approximately 6,000 years ago. http://en.wikipedia.org/wiki/Guam
US #E5 Overprinted
in Red "Guam"
Inside #E1: Stamp on Envelope