Single Groove Tubes EL34 GTE34R power vacuum tube made in Russia grade "5" by GT

Description

Here is a single EL34 vacuum tube that tests strong (new in fact) on my TV7, in plain white box. Glass is clear, pins are clean. Groove tubes were graded for guitar amp distortion so you can select the point of breakup. This was graded 5 for medium or average breakup, lower scores break up earlier and higher scores stay clean longer. I believe this was half of a pair I had in a Marshall amp where the other tube failed when new, because this one tests like new but is a single. Comes in plain white tube box.
Please note: I am liquidating a 40-year collection of tubes and other parts for guitar and hifi amplifiers. I have been selling these parts for over 20 years and have earned a strong reputation for honesty, reliability and customer satisfaction on eBay and other sites. All the tubes I sell have been tested for mutual transconductance on calibrated testers and are reported as such, but the results on my testers may not agree with yours. Further, I cannot guarantee tubes against noise or microphonics. Most of the tubes I sell are between 20 and 80 years old and by nature are fragile antiques. For this reason, I DO NOT ACCEPT RETURNS because of the fragility of vacuum tubes and the uncertainty of how they will be used or abused by the buyer. I will certainly work with any buyer to address any problem that may occur such as a tube that arrives damaged in shipping etc. If as a buyer, you feel you cannot agree to the sales terms of my listings, I kindly and respectfully ask that you do not purchase tubes from me.