Here are two tubes that I've had laying around. These were both used in my old Aguilar DB750 at one point, but I no longer own that head, so here they are.
They both worked fine, but I honestly don't know how many hours they have on them, and I don't have any way to test them.
The Telefunken was purchased in a set of 3 two or three years ago. I verified that it has all the tell-tale signs of being genuine up to being able to whipe off the markings easily. Has the telefunken logo on the bottom plate and all that as well.
I'd like to keep these two together so I'm just going to ask $40.00 Shipped for the Telefunken and I'll throw in the Sovtek for free.
Back of the Tele:
PM me with any questions or offers.
Thanks for looking!