Number 12AX7 ECC83
Manufacturer RAYTHEON
Branded LOWERY
Country USA
The tubes are stamped LOWERY
The tubes were tested on a TV-7 tube tester that was calibrated professionally by Dan Nelson it has a digital meter.
32= 65% of the value of a new tube. Each unit of measurement on the Tv 7 for this tube = 2.031
The Tubes tested at 85% (2.031 x 41.2 = 83.6 %).