U52 Brimar brown base Square getter black plate original boxes holy grail 5U4G pair tested 100% NOS

Description

With a rating of 500 Volts on the anode, the 5U4G U52 remains the best option for any vintage and modern set.

Offering a pair of BRIMAR U52 5U4G brown base square getter.

Same design and same construction

Brimar  5U4G U52 tested with AVO VCM 163 with A1=A2 100% emission

Both valves come with original boxes.