My Tube Collection, Welcome to share yours

[Dr Morbius]

Those are really nice looking tubes, and your pictures are stunningly clear!

 

[adrian cheng]

Those are really nice looking tubes, and your pictures are stunningly clear!

Thank you and glad you like it

 

[adrian cheng]

B65 Clear glass

 

[adrian cheng]

Mullard ECC32 Black Base

 

[oldvinyl]

These are Amperex medical 12AX7 from the Electronics for Medicine. These were made in Holland.


Amperex Herleen factory, 1963 codes (if I decoded it correctly).

 

[oldvinyl]

These are interesting - Telefunken label, marked "SELECTED TUBE". Red tip. Made by Mullard. So .... why would Telefunken need Mullard to make them a tightly balanced, low noise, selected tube? Surely, they could produce them.

Date codes are Mullard.

Mullard Blackburn August 1967. ECC83 3rd production change.

No Telefunken <>, but there is an E.


Another one ---

 

[oldvinyl]

A nice matched pair of Mullard CV5358 ECC88 from 1977.

 

[oldvinyl]

Here is a nice quad of GEC U52 or 5U4G rectifiers.

Hammersmith factory indicated by the Z code on the glass. VB is February, 1964 (if decoded correctly).

 

[oldvinyl]

These are 1962 GE 6BL7 GTA. These tubes were used in televisions for the vertical deflection and oscillator. They are a dual triodes with black plates and great for audio circuits. My amps use these tubes.


I also have the older 6BL7 GT from RCA and Sylvania.

 

[adrian cheng]

Mullard ECC32 Brown Base D and rectangular getter

 

[oldvinyl]

Here is a nice quad of CV717 or 5R4GY rectifiers.
KB = K is manufacturing spec K1001 or K1006, B is for qualification by a UK authority
FE = STC, Oldway which is Standard Telephones and Cables, Oldway, England
U = 1963, E = May, F = June

 

[oldvinyl]

These are U52 or 5U4G on the box and labeled Philips CV575 on the tube.

Tube code is 7C2 J5K.
7C = 5U4G with change code 2.
J5K = Mullard Tottenham, November 1955.

 

[oldvinyl]

Here's a tube with a mistaken identity. These are marked 6SN7GT on the glass and are actually VT-231 from 1944. However, the base and the packaging show them as 6SL7GT or VT-229. They were accepted by the Navy as VT-229 tubes.


Detail: