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Does anyone know these tubes?

Posted by protube@googlemail.com (A) on June 14, 2017 at 05:32:45

Hello,
My name is Heiko, i am german and a new member on audioasylum.
Sorry for my simple english, but i hope i can improve tread by tread ;-)

I like tubes and vintage electronics.
Actually i hear with Marantz from the 70s.
Furthermore some tube amplifier for example with russian triode 6C33C.
I repair my equipment mostly herself and built and create some tube circuits.
In my private stock i have a lot of tubes.

Now my problem.
I have some tubes (probably all produced in USA or Canada) but i don't know how manufactorys it is.
Therefore i take pictures of this tubes and give little further informations, what visible to see for me.
The last owner remove the label. 2 tubes are reprinted (the type is real and ok, but is changed in european type equivalent).

I hope anyone could help me to identify the manufactory.
Thank you, very much !

Best regards,
Heiko

Edits: 06/14/17 06/14/17 06/14/17 06/14/17

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