"The ads state the Banker was available with a 'Gilt or Silver Dial'. We now have 2 ads, one naming the 'N' variant and one naming the 'O' variant, both with this same wording, 'Gilt or Silver Dial, a smal detail often overlooked in Our rush to Name Model 'variants'."
I thought you were gonna do this sort of trick after the ad post with no comments, so I waited for your inevitable "words of wisdom".
Try looking in the new newspaper ads Mark, then you would have seen there are actually three ads.
This one I posted on Monday the 13th, so you had plenty of time to see it.

This is the "O" variant and it says "Roman numerals on a gilt dial".
Making the "N" variant the silver dial, same as the subject.
The biter bit, kinda thing. :^)
EDIT:- I know the subject is not on a metal band, but Mark's O.K. with leather, I think.