

Hoping to be educated here as I’m new to watch mods.
I have seen this dial for sale which is described as a “Genuine Rolex Sub 14060 dial“ (the front picture shows the dial in a case).
The rear though doesn’t appear to be the same flat profile as others 14060 dials that I have viewed and also has no obvious brand markings.
What are your thoughts here, is this dial as described and why does it appear to have a raised ring on the rear?