T-Funk Tube ID

[CZ4A]

I recently bought some tubes from Craigslist. Mostly 12AX7s, but among them I found this Telefunken dual triode. There is a shield mounted diagonally between the triode plates. Unfortunately, most of the writing (including the designation) is gone. There is no Philips etch code but it does have the diamond in the glass between the pins, so I am sure its a real-deal Telefunken. The pinout matches a 6DJ8 instead of a 12AX7 (pin ( to internal shield). Any thoughts on what it might be?

 

[Steve O]

Looks a lot like 6AQ8.

 

[CZ4A]

I believe you are right, the tube is a 6AQ8/ECC85. I was thinking it could have also been a 6KX8/ECC808, but the pin-outs are different. Thanks!