NOTE: These tubes have identical construction to Brimar 6060 T Series Tubes (Item 10). Sonically we cannot tell the difference. Very likely, civilian version of this Valve was marketed as Brimar 6060 with T(Trust) Series Logo. Both of these tubes have very particular black plate construction with copper grid posts, different from the later production Brimars.

Brand New, MINT NOS Late 1960s - Early 1970s Brimar Military Production CV4024 12AT7WA tubes with Black Plates and copper posts. Made in England. Repacked in white boxes from the 100 pcs bulk box. Very desirable 12AT7/ECC81 type tube for both Audio and Guitar applications. ATTN: Labels on some of the pairs are in thinner/smaller font than the ones shown in the picture.

Tested and matched on Top of the Line Calibrated Hickok 580 Lab Grade Tester. 100% is roughly 5500 mmhos on this tester for 12AT7.

Single Tube = $35. Select 2 Tubes for a Matched Pair and 4 for a Matched Quad.