You are bidding on a engraved base RCA Cunningham 2A3 vacuum tube.

Tube testes just below the minimum good level on my tester. The minimum rating of 38 represents approx 40% life left and this tube tests at 37.6. So as it does test below the minimum good level the tube is being sold for parts repair with no warranty or guarantee. It may be usable. but it may also not. 

Sold as is with no returns.   

  See pictures for details.