Best products and process to polish piano black KEF speakers

All, thank you for suggestions! I will definitely be trying a few things here. 
KEF should have a good solution for what they use as well.

hope to get some Good results! 
 

thank you 

I have photos but forgot how to get them loaded as you can’t directly post them here which would be nice.

if someone can remind me of the steps.

thanks

https://imgpile.com/m/ly9RzkF

Good speaker.

Damaged Speaker.

https://imgpile.com/m/bgQruIq

@bigtwin, I went in and loaded the pics of the speaker tops for both.  Then copied the URL and pasted it into the window and it gave me a red x in the other box with foreign language indicating that it is not accepting it.  Not sure what I did wrong.  

Any suggestions?

Thank you for help!

For all the suggestions.  I appreciate it and for those out there, I am very good at detailing cars and very picky when doing so. So I am very familiar with paint correction and detailing.  I have 4 different buffers from Rupes to Griots etc. of different size throw but wonder if the paint on these speakers is too soft to use a buffer on even at low speed and softest pads.  I think I will start by hand.  Once I can get the pics loaded you can see the difference from the good speaker to the one that was fixed but not polished correctly.

Thank you,

Rob