This is a Kriegsmarine 7x50 binoculars North Sea, presumably from Srb & Stys, Prag from ww2.
The binoculars has serial nr. 4564. The binoculars is in a used condition.
At right side you see "N"" for Noth Sea , DF 7x50 (=Doppelfernrohr), serial 4564 (probably is this the area of operations, for example the warship number).
These binoculars were used during world war 2 probably at warships.
The lens have no scratches and no fog, you have a sharp picture and a very good view.
The binoculars a absolute rarity and a must have for each collector.