Mullard ECC81 (12AT7) Halo Getter Valve Tube Tests Good Made in England B3C2 See photos for condition. Tests good on Taylor Model 45C valve tester. Triode 1 mutual conductance reading Gm 6.2 Triode 2 mutual conductance reading Gm 5.9 100% factory data in Taylor manual at Gm 5.5 UK shipping with MyHermes Tracked or Royal Mail. International shipping with Royal Mail International Tracked.
eBay