12AX7 labeled "Jackson"

[BlackOut8910]

Anyone know anything about these? Found some NOS for sale.

 

[LP Freak]

Post a picture. Probably just rebranded Chinese

 

[BlackOut8910]

Craigslist add in Dallas:

https://dallas.craigslist.org/ftw/msg/d/nos-audio-tubes/7252537523.html

 

[panhead]

Jackson amp from the 80`s, That what it came out of most likely.