You are bidding on a pair of new old stock Eimac type 4E27A/5-125B radio transmitting output tubes.  These are 125 watt, 5 volt filament output tubes with top pin for the plates.  These are new old stock tubes in their original, but somewhat crushed, FAA boxes.  I am unable to test for emission but I lit the filaments on both.  These  are upgrades from 4E27 tubes, and are hi-mu triodes that could be used in TV modulators.  They are identical, with the same date code, 62-48.  They are guaranteed to be good useable new tubes.  Shipping weight is 2 pounds.  No shipping to China.  Please see my other auctions for more interesting radio and audio items, and tubes.