Offered are (10) NOS 6AU5GT Beam Power Tubes all branded DuMont.  (9) are by DuMont and (1) is made by RCA.  All appear new and unused. Each tests good with strong readings on the Jackson Dynamic Tester and they show no shorts or inter-element leakage. These tubes all have black ribbed plates and dual side getters with all good silver flashing. The (9) DuMont tubes all bear production code: 5-40. The RCA tube has code 2-52. Pick up the tubes for your own projects or work now at hand. Mouse over the photo images to zoom in. NO RESERVE!! Thanks for looking.