Matched Pair
Amperex
7316/ECC186
(=12AU7/ECC82)
Short Plate
Large O-Getter
Top Seams
Made in Holland.

One tube flashes brightly upon powering up for about 2 seconds, which is perfectly normal for European preamplifier tubes.

One tube has Clef logo.

Very Early Production Amperex 7316/ECC186 from 1959.

Date Code: Ct1 Delta 9D & Ct? Delta 9E
Made in April & May 1959 in Heerlen Holland.
-close dates-

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

Measurement: 
2500/2380
2400/2420
where minimum good value is 1950

Tested in my preamplifier to make sure working as intended with no issues at all.

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.