I'm keeping up to date with this thread skim reading the main parts and looking at the pics and I am so impressed with the progress made with this set in such a short time!!!
It is totally amazing to see that the picture tube is excellent and displaying a picture and I look forward to seeing colour pictures on this tube once you get the prototype chassis up and running with the tube mounted in and configured to display colour pictures!
This is absolute amazement and I look forward to further progress with this TV set in terms of restoration work and also identifying exactly what prototype it was and when it was manufactured, keep up the good work mate!!!