Hello...
I purchased some 6C33C tubes on Ebay and found that some of them were labeled with the stamp below.
[IMGHTTPDEAD]http://home.ca.inter.net/~sphinx/6C33C%20stamp.jpg[/IMGHTTPDEAD]
I decoded the text as "rechecked" or "retested" but my question is about the "X". Is this a tube that failed quality control?
I purchased some 6C33C tubes on Ebay and found that some of them were labeled with the stamp below.
[IMGHTTPDEAD]http://home.ca.inter.net/~sphinx/6C33C%20stamp.jpg[/IMGHTTPDEAD]
I decoded the text as "rechecked" or "retested" but my question is about the "X". Is this a tube that failed quality control?