GMT 16750 dial opinions

[Cecca78]

Hi everyone and a happy new year,
This is my first post and I thank everyone for your opinions on the GMT 16750 I recently purchased.
Despite having an early 6,2 million serial (sorry if the picture is not very clear), it has a (mk 4?) glossy dial.
the reseller insisted it has not been replaced from matt to gloss, but I' m still convinced the dial might have ben replaced during a later service.
In the end I really love the watch overall, runs perfectly, and the price was ok, but I'd like to have your opinion and suggestions on the dial/ serial issue.

Many thanks in advance!