6146B QE05/40 8298A Matched Pair - USED - TESTED 100% OK PHILIPS SIEMENS GE RCA

One matched pair (2 tubes) 6146B - QE05/40 - 8298A. They are pullouts from military transmitters, slightly used, tested NOS and carefully matched on calibrated Metrix U61B tester as it's shown in photos. Various brands: Philips, Siemens, GE, RCA, ...