Early 1960's General Electric 12AX7 with 17mm Long Plate. Was lucky enough to just get in a quantity of these that were sold to Seeburg electronics in the 60's. They are beautiful sounding tubes, extremely well balanced from top to bottom, very warm and detailed with a lot of air. I prefer them in most of my gear to the Telefunken and Amperex 12AX7's. Truly, one of the great bargains in vintage tubes.
I have at least four great testing and great sounding, matching construction pairs. All have beautiful shiny getters and are fully tested on a calibrated Hickok 539C tester. All listening tested for excessive noise and best sound. I will sell at 60 per pair or 120 per quad while they last.
No paypal fee and $5 shipping in the US, more elsewhere.