Ei KT90 Type II VTL Blue Yugoslavia Vacuum Tubes Quad (4) Near NOS 95%+ Rare

Description

Quad (4) NOS EI KT90 Tubes.
Ei KT90 VTL Blue Version Type II Vacuum Tubes Great Condition! Very Rare and Highly Coveted. Dual OO getter tested 95% Don't Miss!
Ei VTL type II KT90  Vacuum Tubes
Blue Lable
Electronska Industrija
Made in Yugoslavia.
Unboxed
Tested
Each group has 4 of these wonderful Blue Lable VTL KT90's Type II tubes near NOS condition (95% +) but without boxes.
*Note: The First two photos show all three groups of four but price is for one group of four only.
They have welded gray plates and dual O getters
All have been tested and are in great condition near NOS condition (95+).
None of the tubes showed gas or shorts.
They are identical in physical construction and labeling.
They can still be used as substitutes for many 6550 / KT88 power tubes in amplifiers.
These very nice, very rare   KT90s pulled from a pair of VTL Ichiban  monoblock amps back in 1996. I had 20 tubes tested recently by a local audiocraftman. The tubes were tested  at 400 watts, 50 MA for Gm. Only 4 tubes tested bad and tossed. The rest of the tubes look to be near NOS (
95-100
).  I have decided to sell three groups of four. All the tubes were rated at 95% or higher.
Despite the condition, these KT90s are around 30 years old with undocumented hours of use.
They are being sold As-Is with no warranty.
Please use photos and zoom function for best physical description of actual tubes being sold. NOS (95-100). I have decided to sell three groups of four. All the tubes were rated at 95% or higher. Despite the condition, these KT90s are around 30 years old with undocumented hours of use. They are being sold As-Is with no warranty. Please use photos and zoom function for best physical description of actual tubes being sold.