Matched Quad
Western Electric
396A/2C51/5670
Black Plate
O-Getter
Made in USA.

Date Code: 7316, 7526, 7413, 7713
Made in 1973, 1975, 1974, 1977 in USA.

Fully tested by calibrated Hickok 539C tube tester
with no shorts, leakage or gas.  

Measurement:
5700/5900
6300/6000
5200/5400
5400/5300
where minimum good value is 3150

Strong and well matched quad!

I will gladly combine shipping upon request.

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The tube(s) in this sale include a 30-day satisfaction guarantee.
I strive to ensure you have a completely satisfactory purchase experience.
If you are unhappy with your purchase for any reason,
you can return the item for a full refund.

Please contact me directly prior to opening a return or leaving feedback.
I will almost always reply at least within 24 hours 
to remedy the situation for you with direct communication.