Please excuse the cross reference to another site. It makes it much easier to see the pictures, plus editing of the ad is possible to indicate when tubes have been sold.

I have several pairs of 12at7 tubes in "tested new"condition. These are all 12at7 equivalents, but they are quieter and rated as industrial or military grade.

I have several 12ax7 tubes in excellent condition...tested new when purchased.

I have not used any of the tubes listed as I upgraded my phono preamp.  These were extra tubes. Please feel free to make offers.

Thank you for looking,

Jon

https://www.usaudiomart.com/details/649763112-12ax7-mullard-12at7-mullard-ge-692...