ndgal
ยทI was referring to these general statements and I'm convinced you could share a lot of knowledge apart from statements to the wide-spaced-T's on the 64 reference.
For example, it is mentioned in the book that on the earlier dials, the T's were added later, but I don't think it is mentioned (don't have the book in front of me at the moment) that the PROFESSIONAL print was subsequently added as well and these were in essence Pre-Professional dials. They clearly are, as my pictures above demonstrate. So here, you just got a "Freebie".
I am working on another part where I feel the book is lacking, but I still need two more watches to document (I am just waiting on primo examples to fall into my hands) and once I do I will happily post about it.