Matched trio of old stock Telefunken 12AX7/ECC83 smooth plate, halo getter tubes. On my calibrated Hickok 533A tester, these tested excellent/as new with no shorts at:
tube 1: 1275/1250
tube 2: 1250/1250
tube 3: 1225/1275
where 1250 is considered new.
These are genuine old stock Telefunkens as shown by the etched diamonds in the bases, along with the obvious wear of the lettering which is so delicate on these tubes. I bought these as used/test new from a well known and respected tube seller at the end of Nov. 2011, was using them in one of two amps that I rotated on some high efficiency speakers. I have since sold the speakers and the tubes are no longer needed.
The Telefunken smooth plate halo getters are my personal favorite 12AX7, and you will not be disappointed with these.
Buy with confidence from a long standing audiogon member, and feel free to ask questions. Thanks for looking!