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.
NOS in white boxes.
I believe this is the earliest version of the Mullard. VERY cool tone in every way.
NOS with Mullard markings in white boxes or GE labels and boxes (made by Mullard).