NOTE: Orphans from various lots. Sold as singles. Tubes have various label styles as shown in the picture.

Like New, Single Tubes Rare 1950s BRIMAR 3-MICA CV4024 6060 12AT7 Black Plate Tubes with Square or Halo Getter. Brimar etched date codes on all tubes. STC production, made in England. These 3-Mica tubes are rather obscure and some of the best from the Brimar 12AT7 family. Tubes are packed in white boxes from bulk box.

Tested and matched on Top of the Line Calibrated Hickok 580 Lab Grade Tester. 65%=3500 mmhos for 12AT7 on this tester.

Single Tube = $35.

• Like New, Single Tubes Rare 1950s BRIMAR 3-MICA CV4024 6060 12AT7 Black Plate Tubes with Square or Halo Getter. Brimar etched date codes on all tubes. STC production, made in England. These 3-Mica tubes are rather obscure and some of the best...