The CV584 from Rank Cintel has the commercial equivalent of the PE7B photocell from Mazda.
The CV585 shows typical photocell construction with a half cylinder cathode presenting a rectangular aperture to the incident radiation and a rod anode located at the centre of the cathode.
The KB/OS identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the Z identifies the maker as Rank Cintel, Sidcup.
The rod anode in front of the coated cathode half cylinder.
Face view of the cathode above the pinch.
The wide glass tube envelope is 26 mm in diameter and, excluding the B4 base pins, is 80 mm tall.
