You are bidding on (1) GE 6201/USN-12AT7WB electron tube, made in the USA in 1962.  Gray plates, double mica spacers, copper rods, and top mounted round halo getter.  We got this tube with a large lot we purchased and all had been tested on an Amplitrex AT-1000 digital tube tester.  The test results were printed and are attached to the box; test results as follows:

5600/6000 umhos where 2750 - 5500 umhos is the normal range for each section on the tester

All our tubes are tested and guaranteed by us; we only test tubes on one of our quality calibrated mutual conductance testers, NEVER on an emissions tester.  The testers we use are Phil Frakes's Bitmatic computerized Cardmatic testers from Tubesontheweb, the specific models are Western Electric KS-15874-L2's which were made for Western Electric by Hickok; we currently own two of these testers.  Our backup testers which we use occasionally are military TV-10D/U's.  For specialized tests, we employ one of our VTV Dual Triode Characterizers (for preamp tubes) as well as a Maxi-Matcher (for power tube matching).  Tubes are guaranteed for 90 days, refund or replacement our choice. Thanks for looking at our auction and be sure to check out our other auctions for other tubes that may be of interest.  (lot epe1001, nai-40001)