Help Identify These Telefunken 12AX7's

jcmusic · « **on:** 8 Jul 2010, 12:43 am »

I am trying to find out the year these were made, can anyone help???

Jay

doctorcilantro · « **Reply #1 on:** 14 Jul 2010, 01:19 pm »

10-38, whatever that actually means:

http://www.audiotubes.com/teledate.htm

jcmusic · « **Reply #2 on:** 18 Jul 2010, 07:23 am »

Hi Jon,
I'm not sure what it means either but, those are small case letters. I don't know if that is the same for the capital letters on the tubes.

Jay

doctorcilantro · « **Reply #3 on:** 18 Jul 2010, 12:11 pm »

I noticed that too; assume these have the diamond imprint on the bottom of the glass?

J

jcmusic · « **Reply #4 on:** 18 Jul 2010, 08:27 pm »

Yes they do and they sound awesome!!! That's why I am trying to find out more about them.

Jay

Mike Nomad · « **Reply #5 on:** 18 Jul 2010, 10:20 pm »

I wouldn't get hung up on upper (on the tube) vs. lower case (on the website) letters. The person(s) who put the info up on the site were probably just trying to get it done. 10-38 would typically mean Oct. 1938.

That date code page referenced is for Telefunken branded tubes.

The tubes can't be from 1938: The "Made in..." is in English. West Germany didn't exist yet.

I'm guessing these were made for Fisher, when they did tube gear (early 1960s).