The image below is a picture of the Guam seal.

The Guam seal is oval shaped which represents a sling stone which was used
as a weapon by ancient Chammorro warriors. Displayed within the oval
shaped
seal is a proa (sailing canoe) representing the swift and sea-faring nature of
their
origin; a lone but majestic coconut tree; and the distant cliffline of Two
Lovers
Point, denoting the Chammorro's insular nature and the beauty of Guam's pristine
environment.
The seal of Guam also appears in the center of the Guam flag.
Original Blueprint of the Guam Seal below:

Original Document stating the official Guam seal below:

Copyright Since July 2007. GuamSeal.org.
Guam Seal.