Up for sale is a matched pair (2 Pcs) of rare vintage NOS GEC 6X5G full-wave rectifier tubes (military code CV573), packed in white boxes. Manufactured in England, these premium British rectifiers feature heavy-duty black plate , an iconic foil leaf getter, shoulder-type glass envelopes, and a sturdy black base. Highly prized in high-end audio power supplies for their exceptionally stable emission, clean DC delivery, and reliable performance in vintage power units and custom tubed preamps.

Both tubes have been tested on an Amplitrex AT1000 automated valve tester for Forward Emission (FWD) and Reverse Leakage (REV). Detailed test measurements and status ratings are provided in the table below.