**** Also when calibration I set it at 120 and not the required spot so in reality this tube test about 107 **** Lot of (4) Mullard 12at7 vacuum tubes halo/O getters grey plate possible from 1960s only date code I found clear on one is B1k3 . Bought from estate sale along with others. All tested super strong and passed short and gas test on both sides I used my Sencore TC -136 tube checker Each tube are 97/97 on tester I’ve sold over 100s of vacuum tubes These are sold as is international shipping also Free shipping Will post more tubes as I go through all my inventory Please view photos closely Sold as is no returns
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M8162 12AT7WA CV4024. By Mullard. 2 pieces PER LOT. made in Great Britain. one or more item from. Fully Tested. Purchasing from.
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M8162 CV4024 12AT7WA. SHEILD LOGO. VALVE / TUBE.
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ECC81 12AT7 CV4024 Valve Tube. Mullard, Made in Great Britain. Used, Supplied in Mullard Box.
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Tk1 B7A Code in the Glass.
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MILITARY GRADE MULLARD TUBE, CV4024. EQUIVALENT TO, ECC81, 12AT7WA, M1862.
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Tubes date codes: R0K2 (2nd week Nov 1960), B3A3 (3rd week Jan 1963). No date code present for the Germany made tube. 3 - 3000+/3000 & 3000+/3000 (Angled Halo Getter - Germany). Minimum good is 1920.
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NOS MULLARD TUBE ECC81 12AT7. Tube in great condition. Tube never used before. Codes factory on glass : TK3 B6C1. Tested on Amplitrex .
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