RCA - NOS 6EH7/EF183 Electronic Tube - Tested STRONG

RAYTHEON - NOS 6AY3B Electronic Tube - Tested STRONG

Pair RCA 6GF7A Electronic (Vacuum) Tube (NOS) Original Box Matched tested strong

One RCA 6BJ7 Tube NOS Strong & Balance on all 3 Diodes TV-7 Results

6BG6GA RCA Vacuum Tube (3-Hole Bad Boy) Tested NOS Strong Guaranteed

RAYTHEON - NOS 6AF3/6BR3 6R-K19 Electronic Tube - Tested STRONG

2 x RCA 6BQ5/EL84 *Triplett 3444 Lab Tested Strong Matched Pair*NOS-NIB*#3

Qty 3) 6AM4 tubes, GE RCA NOS Tested. Vintage Electronics