1675 Case Polish Help

[Pcurtin8]

Hello,
I love my vintage GMT 1675, however I'm thinking of selling it because of purchasing another watch this year. The watch is in great shape, however at some point in its past it has been poorly polished. I'm thinking about trying to fix this regardless if I sell or not. Any insight on Rolex case polishing?

Should I send it to Rolex service center to get factory Finnish?
Is the damage to severe and I should just leave alone?
Would it need a restoration specialist?
Is the case all that bad?

Any input would be useful.

Thanks Paul