Can anyone help me identify this 6SN7GB?It doesn’t seem to match anything in the identification guides. I have search and searched and can not find any photos online of this exact tube. Closest looking tube would be the RCAs, but this doesn’t not have the support rods on the outside of the plates like the RCA.
The tube is labeled Ken-Rad, but I think Ken-Rad might have stopped making their own 6SN7 at some point and was relabeling tubes. Either way, the structure does not look like any of the ken-rads online nor does it seem to fit the discription... namely the micas do not fit the ken-Rad description.
Please let me know if you can help identify the tube and bonus points if you can post a pic of another example of the tube.