Telefunken in Disguise?


A highly rated Audiogoner sold me what are supposed to be a pair of Telefunken 12au7 smooth plate tubes. What actually arrived were tubes labeled "Mazda BelVu 12au7  ECC82." They do have what appears to be a diamond engraved on bottoms, although it is hard to see. He insists these really are Telefunken - made 12au7 smooth plates. I do not know enough to accept or not. I cannot find anything on-line confirming his representations.

What say the the tube experts?

Neal
nglazer
Thanks, Rodman. I may have used an inexact term. I will check them again, and perhaps post a photo.


There are Telefunken smooth plates that have Mazda labels and they should have the diamond embossed.  That could be what you have.
Be carful  i once got Telefunken that sounded like junk hope you did not pay to much and they sound good.Good luck.

On counterfeit you can make fortune especially on ones that have no compromise in performance to the original. I once had Dr. Dre beats studio purchased for $12 sounded and looked exactly the same as $250 ones. When Alibaba wasn't US owned company, it was HEAVEN -- no labor needed -- just buy and sell.
Very often I noted counterfeit is just the same product, but manufactured voiding customs, taxes, commercials... another words just product without too much of third parties. Every dark side indeed has bright one as well.