Mazda PEN383 Grey Glass Pentode Valve Tube Made In England Tests Good Boxed

See photos for condition.

Tests good on Taylor Model 45C valve tester.

Mutual conductance reading Gm 4.8

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.

I will combine postage on multiple valve orders. See my other listings!