BRIMAR CV4034 - MINT NOS NIB 1970 Mil Long Plate Prem. Grade Long Life ECC82/CV4003/12AU7/13D5 Halo Getter STC Prod. ENGLAND(Plug&Play Ready to Use) - M. Pairs/Quads/Singles High Reliability Long Life version

High Reliability Long Life version of CV4024/ECC81/12AT7 valves (Click Here)

Tubes have Dual Logos

The above are my impressions using the Monolith Liquid Platinum by Alex Cavalli

let’s start with

BRIMAR CV4034 - MINT NOS NIB 1970 Mil Long Plate Prem. Grade Long Life ECC82/CV4003/12AU7/13D5 Halo Getter STC Prod. ENGLAND(Plug&Play Ready to Use) - M. Pairs/Quads/Singles High Reliability Long Life versionTubes are Plug & Play, Ready to Use, fitted with our Custom made thermosetting Bases. Brand New MINT NOS NIB Rare 1970 BRIMAR CV4034 Long Plate Military tubes. CV4034 Flying Lead is a Premium Grade, High Reliability Long Life version of CV4003 ECC82 12AU7 valves (Click Here). STC Rochester Plant Date Codes are faint and painted on instead of etching in some of the earlier Brimar flying lead type, and may not be visible on all tubes. Royal Naval Store