I meant to post this some time ago. Look at the curves ... not those!
These curves are from the 6N23P tube that I received with my Eros 2 kit a couple of months ago. They look more like the idealized curves that manufacturers publish in their data sheets, than curves for a real life tube. Amazing! I don't know, if every tube in every Bottlehead kit is as good as that one, but I certainly can't complain.
Thank you, Doc, Eileen, and Paul's.
The relatively small .jpg file that I was hoping to attach gets in the way of posting this message, so still no curves. I'll have to look for another way on another day.