Some mid-late 70's 23V tubes from Zenith consoles did not yellow. I know my 1971 with a 23VATP22 is the standard shade of chartreuse like most by now. I had a 23VCMP22 I traded to another VK member that had no hint of yellow. It saw sunlight, heat and cold.
__________________
"When resistors increase in value, they're worthless"
-Dave G
|