Yes, you can too reverse cleaning...kind of. Carry those pennies in your pocket (not all at once of course) and the surfaces will be worn back to a circulated condition. The coin will have dropped a few grades, but its not like they were MS. That works for nasty looking cleanings where it looks like they did use a belt sander.
And as I said, those werent "cleaned" per se but polished. They wouldnt use a belt sander for whizzing them...

With the white polishing tips...there ya go!
And as I said, those werent "cleaned" per se but polished. They wouldnt use a belt sander for whizzing them...

With the white polishing tips...there ya go!




















