Well, A and B are certainly true, and yes, C is true in the way a watch is worn, but, if 'a civilian' was to ask about your watch, and you passed it over, if I was that civilian, I would immediately wonder why the case back did not match the rest of the case finish. Not saying I'd then ask "Is this real??!!" because I wouldn't really know better, but I'd certainly notice a difference in color and be curious as to why that was That said, it's your watch, so your choice what you do with it