3rd Reich Kriegsmarine Monatskarten Nordatlantischen Ozean

In an excellent condition KM monthy sea charts 1939-40 These charts were highly secured and you needed a special stamp pass to be allowed to investigate them. These are 1939-40 monthly sea charts from the Nord Atlantic ocean for the Oberkommando der Kriegsmarine. Numbered 2213, The book is intact and complete. The book is large measuring 45 x 65cm and is about 1.5 kilo in weight