BRIMAR F6067T - Very rare 1950'S MINT NOS NIB. Large Halo Getter STC Footscray Prod. ENGLAND. Mil Black Plate Prem. Grade Long Life ECC82/CV4003/12AU7/13D5 (Plug&Play Ready to Use) though not harsh as the

though not harsh as the Telefunken

Date codes on these flying leads CV4109 are painted on instead of etched codes found on regular versions

BEL ECC83 tubes have very clean sound

Midrange: the midrange response on these tubes is wonderful

BRIMAR F6067T - Very rare 1950'S MINT NOS NIB. Large Halo Getter STC Footscray Prod. ENGLAND. Mil Black Plate Prem. Grade Long Life ECC82/CV4003/12AU7/13D5 (Plug&Play Ready to Use) though not harsh as theOne of the rarest 1950s Brimar Special Types ever produced. F6067T Flying Lead tube is a Premium Grade, High Reliability Long Life version of CV4003 ECC82 12AU7 CV4034 valves and has a slightly higher gain than the 12AU7 20 vs 17. This 12AU7 variant has black plates with a single connected joint, welded tabs to support plates, copper rods, large halo getter and the Brimar "Trustworthy" valve Yellow triangle with a T logo. They test perfect and only