A brass removeable globe conductor's model with a bayonet base. There is an oval "M. M. Buck & Co." maker's hallmark stamped into the lid reflector. This frame has many issues - too numerous to list - and can be seen by careful examination of the photographs. The lid is stoved and dented and in the brass spring latch wire is missing, so the lid is not secure. The vertical guard wires are broken at the top ring. The base is stoved and bent, and the unit will not sit flat on a flat surface. The split-color signal green/clear globe is correct for this frame, and is engraved "Hibbard." There is a chip and hook crack starting from the base fitter in the back. Condition: (Poor). Dimensions: 6 - 1/2" x 6 - 1/2" x 11 - 1/2".