James, thank you. These magnificent photos are so useful and of real quality.
The last of the shots raises an interesting, if pedantic point in my mind. In the serial number, the individual characters appear not to be spaced properly, with the first number 5 and the following number, a 6 , looking almost squashed together. Is this something TVAL have replicated from an original. See, I said it was pedantic!
Best wishes
Nigel