I have 2 Excellent matched new in the box 1992 same dated 92-04 Eimac varian 3-500Z tubes.Please note some of the foam insert was eaten by mice in storage.I ran these tubes for 30 minute each at full output in a ameritron al80A to make sure there was no gas from sitting or any other surprises with the tubes.These will nt las long at this price as these are some of the best 3-500z tubes ever made and are matched and you dont see them at this price anywhere!!! The steel caps are included but do have marks from me tightening them up in the amp to test them.