Fleet Post Office

Fleet Post Office (FPO): An official United States post office for use by U.S. military naval units abroad. Frequently abbreviated FPO.

Fleet Post Office - a military post office for Navy and Marine personnel. APOs and FPOs are often referenced together.
Flexography - Letterpress printing that employs a resilient synthetic or rubber composition plate.

fleet post office (FPO)—A branch of a designated USPS civilian post office, which falls under the jurisdiction of the postmaster of either New York City or San Francisco, that serves Coast Guard, Navy, or Marine Corps personnel.

Fleet Post Office - See "Field Post Office (FPO)."
Flyspecks - Design or error items that need to be magnified in order to be clearly seen.

Fleet Post Office: An official U.S. post office for use by U.S. military naval units abroad. See also Field Post Office.

Fleet post office: military postal facilities for serving men and women in the naval forces, staffed by military personnel.

In the United States a close equivalent is the Army Post Offices (APOs), the Air Force Post Offices (AFPOs) and the Fleet Post Offices (FPO in the U.S.).

See also: Stamp, Cancel, Used, Cover, Postmark