6SL7GT ECC35 Brimar Valve Tube Black Base x 2 NOS (P41)

Acid etched 6SL7GT

Orange Brimar logo on base

Oblong bar getter

Grey tubular anodes

Made in England

They have BBC Valve Section labels attached, one label is dated 1956

Test results:

V1 – A1: 2.2ma 1.3gm   A2: 2.1ma 1.3gm

V2 – A1: 2.6ma 1.3gm   A2: 2.7ma 1.4gm

NOS