RCA 12AX7 Matched Pair, Black Plates, Square Getter, Hickok Tested

This is a used RCA 12AX7 tube, tested good on a pair of Hickok 533A testers. 

The Gm reading for each tube is in the photos. 

A reading like 1000/1100 means for one tube, the first triode tested at 1000, and the second triode tested at 1100.  Each box is marked with the Gm readings for that tube.  Readings are made after each tube had a ten minute warmup..

This pair of tubes will ship safely and quickly from Mississippi.

SKU RB17