I had two and became very upset when the lid opened from the bottom dropping my favorite tube to the floor. Well keeping one is not doing anything for me.
Anyone with one 6sn7 input tube amp here's a great tube. I've been able to put 30 hours at most.

Tube is quite and in nice shape.

Here's the one for sale
Here's pic of the broken one so you can see the internals I am upset as I spent $400 plus shipping for them and they where the best 6sn7 I was using.