Vacuum Tube National EF80

This is a vacuum tube that my grandfather used.
It has been stored in its box, so I believe it is usable.
Please judge its condition from the photos.
As there is no way to test its operation, it is sold as untested.
Please purchase with the understanding of this condition.
This item is strictly used, so please refrain from purchasing if you are sensitive about condition.
We do not accept cancellations, returns, or refunds for any reason after purchase.
Price negotiation is not possible.