For your kind consideration is this vintage Mullard ECC83 12AX7 preamp tube made in Great Britain at the Blackburn factory. It has the ribbed grey plates, square getter, strong ink, and the pins are in good condition. Codes read MC1 & B8K, dating this tube to November of 1958. The tube is in great condition, passes gas and leakage tests, and reads strong.
Tested on our Hickok Model 799 Mustang tube tester that was cleaned and calibrated in the past month by a highly reputable tech. Drugan's Drums & Guitars is a top rated family owned and operated brick and mortar vintage boutique with over 20 years worth of extremely satisfied customers around the globe, and all tubes are sold as-is. Enjoy!
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