U.S. Possessions
GUAM

A former Spanish Island possession, Guam was captured by the United States and ceeded to
the US by treaty following the Spanish-American War. Overprinted stamps were used until March 1901.
Regular US stamps were used after that date.
Guam Guard stamps were started as a local post office service after the U.S. Post Office Department
refused to expand service on Guam. Guam Guard stamps were used until April 8, 1931.

Click on the thumbnail to view the larger image.

Image	Image 2	Inv.#	Scott #	Date	Category	Topic	Description	Cat. $	Price
		88646	1-8, 10-11	1899	Guam	Set of 10, missing #9 (10c type II) Black Guam overprint on US stamps.	#1-8 are Mint, NH #10-11 are Mint Hinged	$2,280.00	$1,500.00
		2020	1-2	1899	Guam	Black Guam overprint on US stamps. We have two sets.	Used	$50.00	$35.00
		88650	11a	1899	Guam	Black Guam overprint on 50 cent US stamp.	Mint, OG, Hinged	$550.00	$395.00
		88652	E1a	1899	Guam Spedial Delivery	Red GUAM overprint on U.S. stamp Dots in frame over messenger	Mint, OG, NH	$400.00	$295.00
		88654	M1-M2	1930	Guam Guard Mail	'Guam Guard Mail' Overprint on Philippines stamps	Mint, OG, Hinged	$625.00	$495.00
		88658	M7b	1930	Guam Guard Mail	'Guam Guard Mail' Overprint on Philippines stamps ERROR: printed MIAL	Mint, OG, NH	$425.00	$325.00
		2038	M8-M9	1930	Guam Guard Mail	'Guam Guard Mail' Overprint on Philippines stamps	Mint, Hinged	$3.35	$2.35

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Date of last update: 03/29/2025