I gave it a shot. I had to start off with 250 grit wet and dry to remove the worst of it. I worked up to 7000 grit and finished off with Polywatch. I think there is still margin for more polishing (The green deposits are from another abrasive I used).
The strange 'L' mark on the sub dial is only a lint thread.
For something that scratched so easily it was something of a task to remove. I know it's not perfect and the macro lense shows up a lot that you can't see with the naked eye.
What do you think?