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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
rodman99999
6,130 posts
 
Tele’s diamond is actually an embossed(raised/molded) emblem, rather than engraved. If it doesn’t appear as shown in these pics- the tubes aren’t genuine Telefunken: https://www.google.com/search?q=telefunken+diamond+bottom&espv=2&biw=1138&bih=645&tbm=isch&imgil=yDRmlK2HP6o9jM%253A%253BcFBa4mwTgh_FvM%253Bhttp%25253A%25252F%25252Fwww.tubemongerlib.com%25252Fgallery2%25252Fv%25252F7308%25252FTelefunken%2525252BE188CC%2525252BDiamond%2525252BBottom%2525252B-%2525252BULM%2525252BWestern%2525252BGermany.jpg.html&source=iu&pf=m&fir=yDRmlK2HP6o9jM%253A%252CcFBa4mwTgh_FvM%252C_&usg=__Zg8UGz3kJNKD1kTsqPbwaH-T5rw%3D&ved=0ahUKEwjX-cnnrcHPAhVH54MKHUxdD5AQyjcILw&ei=XbzzV5fXAcfOjwTMur2ACQ#imgrc=yDRmlK2HP6o9jM%3A
nglazer OP
846 posts
 
Thanks, Rodman. I may have used an inexact term. I will check them again, and perhaps post a photo.


onhwy61's avatar
onhwy61
5,216 posts
 
There are Telefunken smooth plates that have Mazda labels and they should have the diamond embossed.  That could be what you have.
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