West German FF OB/ZB Field Telephone with sling

West German FF OB/ZB Field Telephone

The Field telephone FF OB/ZB was redeveloped in the 1950's to replace the wartime Field Telephone, it was similar in size and shape made of the same dark Bakerlite complete with shoulder strap, telephone handset and connecting cable.

They have not been tested and not guaranteed to work but do come from German Signals Stores with no labels saying any faults