I have one NOS Telefunken 12AU7 tube made in West Germany in the 1960's that I purchased from Vintage Tube Services. I used this tube in the pre amp section of my Rogue Cronus Magnum II integrated amp to replace the stock 12AU7 JJ tube with great results. Mark O'Brien from Rogue Audio pointed me to this exact tube and this distributor. Now that I have sold my CMII the tube needs a new home. I only have approximately 50 - 100 hours on it so she is just breaking in and delivering very sweet sound indeed. Please see attached pics of the tube, the box and invoice which has all the details.