Tested Trio of 50C5 Mixed Brands Audio Radio Receiver Power Vacuum Tubes 

Made in the USA

Round plates, clear glass, two spacers, wire getter frames and nice getter flashes

Construction variations

Please see the photos for more detail

   Excellent strong balanced test results for Gm:  70,  66  and  56

   For Gm, 45 is the suggested minimum value

   No shorts detected

   For reference, we use a calibrated Military TV-7 Tester

Estimated delivery within the USA is from 3 to 7 business days

Our standard shipping is US Postal 1^st class

We combine shipping when applicable

Please contact us with any questions