U54 Marconi full wave rectifiers 53KU GZ34 equivalent British made code rs1 mint New Old Stock pair tested 100%

Description

The U54 is a full wave rectifier and a high current version.

It was first introduced in 1955 right after the GZ33 Mullard counterpart.

We offer a pair of spanky new tested 100% Marconi U54

Both valves have code etched on glass starting with rs1.

Both valves come with original boxes

Tested with AVO VCM 163 A1=A2 100% emission