Made in USA by Western Electric.

Ceramic base. Muddy black plate. Bottom Pan-Getter

Nos, never been used but no box. Matched pair are available.

Made in USA by Sylvania.
Muddy black plate.
This is special triode ever made.
Go to www.vt52.com for more informations.
Used but test as new and matched. No box. Matched pair are available.

Made in USA by Western Electric.
Muddy black plate, Engrave base. The best of Triode.
Characteristics and Typical Operation similar to 45 but use 7 Volts filament.
Go to www.vt52.com for more informations
Nos, never been used but no box. Matched pair are available.

Made in USA by Hytron.
One of great DHT power tube. Muddy black plate.
This type can be direct replace for VT-25 / 10Y with more power output.

Nos in original box. Matched pair are available.

Made in USA by RCA.
One of great DHT power tube.
Muddy graphite smooth plate. Ceramic base version
This type can be direct replace for VT-25 / 10Y with more power output.
Used but test very good as new. Matched pair are available.