Portable Mining Magneto Telephone.
A portable mining magneto telephone. Made by Ericsson. Type N-1834.
Made from mahogany wood and iron. Size 12″ x 7″ x 5″ inches. Dated 1940.
This telephone unit has an Ever Ready 3 volt battery incorporated into the back of the unit and a detachable winding key that can be inserted into the body through a covered hole on the front casing.