Embassy of the United States of America, official German stamps, 1940 letter from MJP.
*** If you know history a bit:
MJP. Military Judgement Panel . Government, Army, Ministry Of Defense.
The letter was sent by the USA Embassy in Berlin, NAZI Germany to the Peabody State Bank.
Actually a pretty small, unknown bank in KANSAS, rural area.
Now, now it becomes interesting!
Around Peabody, the US Gov set up a few larger POW - Prisoners of War Labour camps, which would be filled up with German and some Italian soldiers, thereafter...
*** ROOSEVELT and CHURCHILL wee in secret contacts over an USA involvement, into a war with Germany and the change of Government in London.
*** Apparently, in the night of May 20 1940, a Diplomatic "Blackout" of all USA Embassies around the world occurred (Joseph Kennedy, US embassy London), and lasted for up to 6 weeks)
*** Mind, the letter was posted well BEFORE America entered the war!
*** Interesting is also, the letter comes with Washington USA cancel only, on German stamps!
August 12, 1940
***
This kind of envelope is probably a one of its kind to find HISTORIC artefact!