Yes, was questioning if VT tubes were build differently than consumer. Based more of what I have come across, the VT is just another label, but same construction. I guess I got caught up in the idea when I first read about military grade tubes with the 6080s, where the 6080W- variants are more rugged in construction and said to last longer, etc., so and that maybe true for those tubes, but not for the "VT" series. So I get it in my head that anything military designated may or could be different in design. But for the 6F8Gs and VT-99, they seem to be one and the same.