Made in W.Germany by Telefunken. 
Diamond Logo on the bottom, Great of 12AV7 / 5965.
Best choice for Conrad Johnson Pre-Amplifier.

Nos in original box. Matched pair are available.

Made in USA by Sylvania 
Long gray plate, O-Getter and gold pins.
The best of 12AV7 / 5965 ever made from USA.

Nos but no original box. Matched pair are available.

Made in USA by Sylvania. 
Fat black plate, D-Getter and copper support.
Great of 12BH7s.
Used but tested very good, like new.
Matched pair are available.

Made in USA (1950s). 
Muddy black plate, D-Getter. Best of 12BZ7. 
Great High-Mu Twin Triode. Best choice for most of classic Mc-Intosh products.
Nos in original box.
Matched pair and quad are available.

Made in USA (1950s). 
Muddy black plate, D-Getter. Best of 12BZ7. 
Great High-Mu Twin Triode. Best choice for most of classic Mc-Intosh products.
Nos in original box.
Matched pair and quad are available.

Made in USA by Western Electric.

Muddy black plate and D-Getter.

Used but tested like new.

Made in USA by Western Electric.

Gold grid, Muddy black plate and D-Getter.

Nos in original box. All are same date code (58-26)

Made in USA by Western Electric.

Muddy black plate. Need large 9 pins socket.

Nos in box and test matched. Same date code.