5AR4/GZ34 RCA labelled Mullard rectifier tube. Manufactured by Mullard in UK. Reportedly the exact same tube as a Mullard labelled one, but carries the RCA label.
Lightly used for about 6 months, roughly 250 hours.
Black base and single halo ring at top. Sorry, no stamped markings left. I was cleaning it up to take a photo and the glass cleaner removed what markings were left.
A significant upgrade over the current commodity Russian and Chinese rectifiers.
$65 with standard ground shipping to lower 48.
Thanks
Kenreau
