Zeiss Ikon Key

Vintage German Zeiss Ikon key. I am not sure its exact age or what it was used for. It is a very intricate old key. There is also a smaller key attached to the rope. The Zeiss key has written on the back '200981 32C' and the small key has written '4953'. Both are in generally good condition with light wear. The Zeiss Ikon key measures approximately 3 1/2' long and the other key is about 2' long.