[leftside]

Thank you! The getters are different shapes but just assuming it's different years. They are pretty closely matched. Purchased..

The getters changed over the years from most tube manufacturers. But, seemed to follow a fairly similar pattern. Cup/saucer/flat getters first, then square/rectangle, then circle. But I don't know why...

 

[L0rdGwyn]

Girlfriend found these for me at a flea market, NIB and $10 a pop, not too shabby! She likes to go antiquing, every time we go I try to find tubes and fail. The one time I didn't tag along, she found these. There were maybe 4-5 Ken-Rad 6SN7s in the box too in various states of condition, but I passed.

 

[triod750]

They are nice tubes, also available branded Brimar, some marked 'Distributed by Brimar'.

 

[AnyDave]

Girlfriend found these for me at a flea market, NIB and $10 a pop, not too shabby! She likes to go antiquing, every time we go I try to find tubes and fail. The one time I didn't tag along, she found these. There were maybe 4-5 Ken-Rad 6SN7s in the box too in various states of condition, but I passed.

Have you tried them in your Airmid yet?

 

[L0rdGwyn]

Have you tried them in your Airmid yet?

Nope, not yet! Just got them this evening and working the next three days, so probably later this week. I have another pair of Ken-Rads, different base but same internals if memory serves, they're good tubes.