The Denver mint makes United States quarters for the island of Guam in the Pacific Ocean. Denver mint Guam coins are often listed as “D” or 2009-D in sales listings. (“P” is for Guam coins from the Philadelphia mint.)
Guamanian coins minted in Denver are a part of any complete US state quarter collection, and there are also special gold-plated versions available cheaply for collectors who want something a little different.
Look at the current selection of Guam quarters minted in Denver for sale; some bulk lots and D coins mixed with P coins can be found for the avid hunter. Check back often as the Denver-minted Guam quarter dollars coins for sale section is updated frequently.