This World War II naval airmail postal entire represents a desirable piece of WWII military postal history and Pacific Theater aviation ephemera. The envelope features a clear circular double-ring postmark reading "U. S. NAVY" dated September 11, 1942, A.M., paired with a manuscript killer strike reading "Sailor's Mail" across the stamp.

The cover is built on a 6c orange Transport plane airmail postal stationery entire (Sc UC3, Die 2a), framed by the classic red and blue lozenge border along the perimeter. The upper-left corner displays a handwritten officer return address for "Ensign Charles Allen / Patrol Squadron 91 / c/o Flt. P.O., S.F. Cal." The lower-left corner features a distinct circular military censor strike reading "PASSED BY NAVAL CENSOR" with the censor officer's manuscript initials in the center. The face is addressed in a fluid period hand to Miss Frances Hogate on South Street in Manasquan, New Jersey.

• Stationery: 6c Orange Transport Plane airmail postal stationery entire (Sc UC3, Die 2a), issued in 1941.

• Postmark: U.S. NAVY circular dial dated September 11, 1942, with "Sailor's Mail" manuscript killer.

• Censor Marking: Circular "PASSED BY NAVAL CENSOR" hand-stamp with examiner's initials.

• Sender: Ensign Charles Allen, Patrol Squadron 91 (VP-91), FPO San Francisco.

• Condition: World War II service condition, displaying typical rough opening tear along the left edge, light handling folds, and crisp, clear hand-stamps.

• Keywords: US Navy Cover, World War II, WWII Censored, Patrol Squadron 91, VP-91, Sc UC3, Sailor's Mail, Manasquan NJ, FPO San Francisco, Pacific Theater, 1942.

World War II Military History: Patrol Squadron 91 (VP-91)

This authentic 1942 military cover offers excellent historical appeal for specialized collectors of classic U.S. naval postmarks, WWII censorship, and military airmail:

• Patrol Squadron 91 (VP-91) Service: Commissioned in December 1941, VP-91 operated PBY Catalina flying boats across the Pacific Ocean during the early critical months of World War II. Conducting long-range ocean patrols, anti-submarine sweeps, and search-and-rescue operations, squadron mail from this early Pacific Theater operational window remains highly sought after by naval aviation historians.

• WWII Censorship & Sailor's Mail: Sent via Fleet Post Office San Francisco, this piece captures the strict military operational security protocols implemented shortly after Pearl Harbor. Every letter dispatched from overseas naval units required official censorship clearing before entering the domestic airmail network, creating a complete historical snapshot of wartime Pacific communications.