2 Vintage CBS USA 12au7 vacuum tubes.

Tubes were made in 1957 and feature black plates.

Tubes have been tested on a recently Calibrated Hickok TV7 tube tester with a digital meter and test as follows:

Tube1 : 80.5/82.2

Tube2 :79.1/80.6

Minimum good value on a TV7 tester for a 12au7 tube is 56. The tubes test within or near the NOS range!

Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs.

  See pictures for details.