The CV1472 is a gas filled photocell and the prototype was the short version CMG25. The commercial Type CMG25 is identical to the CV version as both designations appear on the glass.
The photo cathode is caesium on silver and the tested working voltage is 80 Volts.
The KB/OS identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the OS identifies the maker as Rank Cintel, Sidcup.
The rod anode and half cylinder cathode.
Top view showing the photoemissive coating.
The wide glass tube envelope is 26 mm in diameter and, excluding the B4 base pins, is 79 mm tall.
