Writing another part of my second book, found an very interesting quote in an English article. I'd like to cite the original source, but the citation leads nowhere.
"BAK, R57 (neu 25) Standort 10, Magazin 11A,
Akten K 2.03, Reihe 117, Vertraulich. Lagebericht
fur die Zeit, 1 October–31 December 1941"
I only only that "BAK" is Bundesarchiv Koblenz, but I have no reasonable way to check what modern signature lies behind the rest of citation.
Does anybody have an idea which archival unit is here cited?









