Original German WWII Kriegsmarine U-Boat Radio Test Unit Type F2 with Operating Instructions & Chart MG 13 along with the same message

along with the same message as on the Chinese blood chit

but the images remain clearly visible and rather easy to distinguish

There are markings present but is too corroded to read properly

and the military

or salakof

Original German WWII Kriegsmarine U-Boat Radio Test Unit Type F2 with Operating Instructions & Chart MG 13 along with the same messageOriginal Item. Only One Available. This is a very scarce German WWII Kriegsmarine Radio tester kit, all original in its original case, serial numbered 2899. This is the first example of this set that we have offered. The instructional booklet mentions in several places that the set is for Naval service use only, meaning it was meant for use by the Kriegsmarine, likely on U Boats from what our research has told us. The set is marked on the bottom right