This pair of tubes have same product number( U7005701u). Also they are NOS. Never used ones. You can understand to see the photo as follows. The gold pins are shinning brightly, right? I have 6 sets of this tube now. They are all same product number and NOS. If you get them more,please let me know. I have gotten these tubes from old audiophile who has become too old to hear the music. Very good person. He said to me that he have bought this tubes 30years ago and has stocked for his precious nest egg.