(2) CBS 6CZ5 6973 Jukebox Vacuum Tubes Gray Plates Ring Getters 

Tests on an Amplitrex AT1000  

Tube 1 Emissions 112% | GM 97%

Tube 2 Emissions 94% | GM 103%

I'm always happy to combine shipping so please feel free to reach out with any questions on any of my other listings.

Your tubes are always securely packed for fast & free shipping!