Don in Seminole FL gave me a heads up on this a week ago knowing what I was looking for. The fact there is zero cutoff made me decide to pass. Looking at the pictures, the filament cup is fairly well blued from heat and use. The price is $450 with shipping so that was also an issue with passing on it. If it had good cutoff along with the good emissions, I might consider it but I'm thinking that's too much for a questionable tube. Am I making a good decision deciding to pass on it? The weak 16GP4 I already have tests similarly, no cutoff and decent emissions producing a dim, soft image.
https://www.ebay.com/itm/32685477722...MAAeSwRzlpDqj1