The CV8463 is the CV4024 but with gold plated base pins.
The CV4024 UK procurement specification for the Brimar 6060 and/or the Mullard M8162. They are special quality versions of the ECC81 VHF double triode.
The red circle and letters is not clear enough to read.
A version with flying leads for direct soldering into circuit is the CV4033.
The face view of one triode anode.
The twin triodes separated but without a central electrostatic screen.
Here the front to back depth of the triodes can be seen together with the fact that the anode is folded and stitched. The pins are gold plated for better contact and corrosion resistance.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins, is 47 mm long.
