Made in USA by RCA.

Black glass, round plate.

Nos in original box. Matched pair are available.

Made by Tung-Sol (1942). Round muddy black plate. Round mica.
This type is used as phase inverter or voltage amplifier in radio equipment. Except for common cathode. Each triode is independent of the other. Requires octal socket and may be mounted in any position.
Nos but no box. Matched pair are available.

Made in USA by Tung-Sol.

Muddy black plate and D-Getter.

Nos in original box. Matched pair are available

Made in England by Osram (1960s).
It is the same B65 version but use 12.6 Volts for filament.
Large muddy black plate same as the metal base version. Bottom D-Getter.
One of the great tube from Osram with ligh brown base.
Nos in original box. Matched pair are available.

Made in Holland by Philips for Marconiphone Corp. Ltd (1960s).
It is the same B65 version but use 12.6 Volts for filament.
Black base, Smoke glass. One of very nice tubes from Philips.

Nos in original box. Matched pair are available.

Made in G.Britain by Osram.
Muddy black plate, Aluminium base and smoke glass. Bottom Cup Getter.
This version which was special designed and made for British's Military in 50s.

Used. Tested good and matched plate. Matched pair are available.

Made in England by GEC (1960s).
It is the same B65 version but use 12.6 Volts for filament.
Large muddy black plate same as the metal base version. Bottom D-Getter.
One of the very nice tube from England.
Like new in original box. Matched pair are available.

Made in Holland by Philips (1960s).
It is the same B65 version but use 12.6 Volts for filament.
Black base, Clear glass. One of very nice tubes from Philips.

Nos in original box

Made in G.Britain by Mullard.
Nearly same as 6SN7 type.
This is the black base version, smoke glass.
Nos in original box.
Matched pair are available.

Made in G.Britain by Mullard.
Nearly same as 6SN7 type.
This is the black base version, smoke glass.
Nos but no box.
Matched pair are available.