In this implementation the bright perforated screen encloses the anode as is the case with the Mazda PCF808. In PCF808 the screen is placed between the triode and the pentode but does not go all the way round the anode. Thus the anode is visible.
The triode on the right.
Face view of the triode with the bright electrostatic screen behind and copper supports for the control grid.
The perforated screen around the pentode section.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.