GZ33 Mullard rare yellow printing code rs1 pair valves U54 53KU equivalent tested 100%

GZ33 Mullard yellow printing GBP 280 pair.

Description

The GZ33 is a full wave rectifier and a high current version at 250mA. Like the GZ34, the GZ33 has the cathode  tied to one side of the filament

It was first introduced in 1954

We offer a pair of spanky new tested 100% Mullard GZ33 with yellow printing made in Great Britain.

Both valves have the same code etched on glass rs1 etc.

Tested with AVO VCM 163 A1=A2 100% emission

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