The CV4033 is a special quality double triode with flying leads rather than pins as in the CV4024. The CV4033 is the equivalent of the Mullard M8162 special quality version of the ECC81 VHF double triode. It is useful for RF stages, oscillators and frequency multipliers.
This exhibit is New Old Stock and the flying leads are just as they appear in the corrugated wrapper.
Face view of one triode. The cathode tube is round and the grid has copper supports.
The anode ends are open and the relative electrode spacing can be seen.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins, is 48 mm long.
References: Data-sheet & 1040. Type CV4033 was first introduced in 1956. See also1956 adverts.