Check before you pay for a copy.
The report may well gave useful info, but the service instruction books are large and don't usually cover the information you're after. You could pay a lot and not get what you're after. Same with the parts lists.
I've seen armour values on separate diagrams but I doubt these were provided into the field for obvious reasons, so they're not common.
Have you tried asking the archives folk at the tank museum in Bovington, UK?
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