Interesting... the ebay ones show the tube to have an round top mica support with another "Trimmed on the side" round support above it extending beyond to the tube glass. This looks identical to the one in the dagogo picture of the tube with the serial number inside the glass. The top picture in the Dagogo article with the screen printed label is rotated 90° but is from a low enough angle that you would still see the second layer extend to the glass beyond the mica. It almost looks as if it were trimmed in the the "support free" image but now that I look at it closer I think it is there but has a slight bend to it from the down pressure of the tube envelope making it disappear since it is perpendicular to the lens.
Oh well.... it was an exciting possibility while it lasted.
dave
