One, new in original box, RCA or CBS 0D3 tube, with the tall, shouldered glass bulb.. There are two tubes available, the listed price is for one however. Tested on a Hickok TV-3 military tester that has been calibrated, just to make sure. Firm bases and excellent silvering. Every tube tested new, as they should.  If you order just one, please indicated a preference for one or the other, if it is important to you.

Many other lots of tubes for sale this week.