354V NR52 CV1173 AC/HL HL4 Haltron Mullard metallised gold paint valves British Navy

Description

Nice set of four pieces rare Haltron with Mullard gold paint  type NR52 HL4 for the British Navy and it is a receiving valve.

It is also used in audio application with stunning results being equivalent of 354V; MH4  and AC/HL

Dated back from the early 1940s and bear CV type 1173. All valves mint and boxed.