Made in G.Britain by Mullard.
This is the first 5AR4 / GZ34 ever made by Mullard. Fat Base and Double O-Getter.
It is F31 Seri. This version is one of legend Full-Wave Rectifier.
Some of them are marked as Mullard, Amperex, Dynaco... but all are the same. 
Nos in original box. Matched pair are available.

Made in G.Britain by Mullard.
The first 5AR4 / GZ34 from Mullard - Blackburn. Fat Brown Base and Double O-Getter.
It is F31 Seri. This version is one of legend Full-Wave Rectifier. 
The brown base are special made for English Military so they are marked CV1377. 
Nos in original box. Matched pair are available.

This is the third version with Double O-Getter. Better than single O-Getter version.
They maybe marked as Mullard, Philips, Amperex, Telefunken, Siemens, IEC, RCA, GE... but all of them made in Blackburn of G.Britain by Mullard (late 1960s).

Nos in original box. Matched pair are available.

This is the third version with Double O-Getter. Better than single O-Getter version.
They maybe marked as Mullard, Philips, Amperex, Telefunken, Siemens, IEC, RCA, GE... but all of them made in Blackburn of G.Britain by Mullard (late 1960s).

Nos in box. Matched pair are available.

This is the third version with Double O-Getter. Better than single O-Getter version.
They maybe marked as Mullard, Philips, Amperex, Telefunken, Siemens, IEC, RCA, GE... but all of them made in Blackburn of G.Britain by Mullard (late 1960s).

Nos but no original box. Matched pair are available.

The last version only have single O-Getter. Nice tube.
They maybe marked as Mullard, Philips, Amperex, Telefunken, Siemens, IEC, RCA, GE... but all of them made in Blackburn of G.Britain by Mullard (1970s).

Nos but no box. Matched pair are available.

The first version of GZ34 / 5AR4. Design & made by Philips.
No hole on plate. Single top small Disc-Getter.
This is the BEST of GZ34 / 5AR4 ever made.
They maybe marked as Mullard, Philips, Amperex... but all of them made in Holland.
Nos but no original box. Matched pair are available.

The second version of GZ34 / 5AR4. Design & made by Philips and Amperex.
No hole on plate. Metal base. Double D-Getter 
Great GZ34 / 5AR4 ever made.
They maybe marked as Mullard, Philips, Amperex... but all of them made in Holland.
Nos in box. Matched pair are available.

The second version of GZ34 / 5AR4. Design & made by Philips and Amperex.
No hole on plate. Metal base. Double D-Getter 
Great GZ34 / 5AR4 ever made.
They maybe marked as Mullard, Philips, Amperex... but all of them made in Holland.
Used but tested like new. 

Made by Philpis and Amperex.
The lastest of metal base version. Six holes on plate. Double D-Getter.
Excellent rectifier tube.
They maybe marked as Mullard, Philips, Amperex... but all of them made in Holland.
Nos in box. Matched pair are available.