The five American territories don't issue coins.
Puerto Rico
Northern Mariana Islands
American Samoa
Guam
U.S. Virgin Islands
Another country, Micronesia, uses the U.S. dollar primarily, though they have minted some NCLT coins. If you can find them, take a look at the Micronesian U.S. presidents series. The portraits look like they were drawn by a cartoonist, and half the names are spelled wrong! My favorites are "GEDRGE WASHINGTON" and "DWIGHT DAVID ELSENHOWER".