This set of 4 TV-7 TESTED GOOD ST CUNNINGHAM 71A RADIO TUBES TYPE 71A SYLVANIA, ALL 4 ARE ENGRAVED BASE TYPE, they were tested good using a TV-7 tester and were found to be in good working condition. These tubes are perfect for vintage audio and video enthusiasts looking for authentic parts to complete their collection. Made in the United States, these tubes are of high quality and can be used for various purposes in vintage electronics and consumer electronics.

You are getting all 4 tubes with your bid (not just 1 tube)

All tubes were tested on my calibrated TV-7B/U tube tester.  The recommended minimum value is 42 (60%).  They tested at:  CUNN 74, CUNN 73, SYLVANIA 74 & SYLVANIA 73, with no shorts.  The test results are written on the glass of each tube.