World War II era lot of three War Department “Official Business” envelopes, blank and ready for filing or display. Each shows printed government markings including the “Penalty for Private Use to Avoid Payment of Postage, $300” notice with PMGC reference.

A strong piece of WWII U.S. military paper ephemera representing wartime administration, official correspondence, and home front logistics. Useful for collectors of military mail, War Department stationery, and period government-issue documents.

Subjects: War Department, Official Business, WWII, World War II, 1940s, Vintage Envelope, Military Mail, Government Stationery, U.S. Army, Army Department, Official Correspondence, Wartime Paper, Home Front, Military Ephemera, Postal History, Penalty Envelope, PMGC, Postage Due Notice, Unused Stationery, Blank Cover, Archival Display, Document Collecting, WWII Memorabilia, US Government, Historical Paper, Office Forms, Wartime Administration, Collectible Lot, Americana, Military Paperwork