Original Telefunken boxes. No diamond on base of tube. Similar mesh plates to Mullard/Amperex.
NOS labeled and boxed as Telefunken. Great sounding tube for Matchless, Bad Cat, Dr Z, Vox or any guitar amp application. These have very good microphonic performance but "Lowest Microphonics" version is recommended for combo amps.
NOS in good original boxes. Labeled and boxed as Amperex or Philips. Excellent tone and tested for microphonics in a Vox AC15.
Made by RFT. NOS in original boxes. Some labeled as Telefunken and in Telefunken boxes. Good/low microphonic performance. Lowest microphonics version recommended for combo amps.
Original and white boxes.