NOS Bendix 6106/5Y3WGT
NOS in original boxes. Labeled and boxed as International Service Master. The most durable, overdesigned, 5Y3 you'll ever see. These have indirectly heated cathodes which means that they turn on (very) slowly like GZ-34/5-AR4s. This feature helps to extend the life of the other tubes in your amp.
I wanted to thank you.
This tube sounds great in my Victoria 518. It really is built like a tank and really brings out the sound of the amplifier.