The Rolex Submariner (vintage)

[Dan77]

Hello and good evening

Hope this question is ok

I have this 16800 with glossy dial that has turned into a bit of matte look and with heavy patina (Pumpkin like)

What makes the dial turn matte and what gives this strong patina to plots and hands? Could it be moisture or something else.

See pictures - and does every thing on the dial looks fine?

Thanks for your knowledge, experince and comments👏