United States Postage Meter Stamp Catalog/GROUP OA – Official Armed Forces government business mail franks

GROUP AR: Meter stamps used by the Armed Forces

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• Group OA describes "OFFICIAL MAIL" format meter stamps used by the military for official business formerly listed under "Group OO".

• Such stamps have town marks that contain "APO" (Army Post Office) or "FPO" (Fleet Post Office) or are mailed from Zipcodes that are known APO or FPO zipcodes.

• Also included are meter stamps that have the name of a U.S. Navy ship in the town mark. These stamps are from meters located aboard ship.

• Additionally any "OFFICIAL MAIL"meter stamp with "NAVY", "ARMY", "AIR FORCE", or "MARINE" referencing the armed services is included.

• There are eight sub-groups based on the branch of the armed services using the meter. Click on those you want to see:

• Sub-group OA-NAV – U.S. Navy

• Sub-group OA-ARM – U.S. Army

• Sub-group OA-AIR – U.S. Air Force

• Sub-group OA-MAR – U.S. Marine Corps

• Sub-group OA-APO – overseas Army and Air Force Post Offices

• Sub-group OA-FPO – overseas Navy and Marine Fleet Post Offices

• Sub-group OA-NGD – National Guard