WW2 War Navy German Reich Kriegsmarine Iron key Security Vault Weapon key

Very Rare iron key WW2 German Reich Navy key. I don't know for what this key was used. The Kriegsmarine translation from German to English is "The War Navy".

The short form is a M for Marine = Navy. Early Nazi item +/- 1930 -1939.

Age of the item is around 85 years old. 3 1/4 inch long x 1 1/2 inch wide.

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