Large extremely rare original World War II early 1940s unused mailing envelope. Titled in German “Staatshochbauamt Dillenburg”. Which translates to: “State Building Authority in Dillenburg Germany”. Below is an imprint of a printed seal logo with the same words in German, a classic German Eagle, and a wreath/symbol with a post it you can remove over it. Below seal logo is a number printed as “K-0906” (probably form or envelope number). Envelope is now and I believe always a khaki color. Some marks, rubs, and small wrinkles in a couple places from 80 years in storage. The area of Dillenburg Germany was a strategic target of the allies since Dillenburg had a major railroad switching station there. This envelope was captured at the end of the war by US Army Intelligence Officer, Captain Bruce De Bourbon Conde. This envelope would look great framed for display. It should be in a museum. The back is in excellent condition for its age or just some minor wrinkles at end and tiny curled end tips. The flap 2 7/8” high still even has the unused gum glue underneath for sealing. On the front top right corner is a 2 1/4 inch wide (face only) paper age crack. You can repair yourself by gluing it lightly from the inside, or have it done, or just leave it as it is because it is no big deal to the overall appearance. Just very minor. See all photographs of details as there are no returns. How many of these are left in the world from German Headquarters in Dillenburg during World War II. Fantastic rare find would look great on display or framed.