Made in G.Britain by Mullard
Mesh plate version with O-Getter and double supports

Nos in box.
Matched pair are available.

Made in G.Britain.
Yellow print, mesh plate version with O-Getter.

Used in box and tested very good.
Matched pair are available

Made in G.Britain by Mullard
Silver plate and yellow print version.  O-Getter 

Nos in box.
Matched pair are available.

Made in Holland.
Mesh plate version with O-Getter and double supports

Nos in box.
Matched pair are available.

Made in W.Germany by Siemens.
This is the first version of this type from Siemens. The special design. 
Nearly same as E88CC / 6922. Data here.
A frame tubes with gold pins, Long body, O-Getter.
Nos in original box. Matched pair are available.