"Mint" is...mint, like a quarter right out of the coin mint. So, I agree, it's not mint. We had a laugh on a guitar forum about the use of "near mint" when describing guitars for sale. One member posted a photo of a rather beat up guitar, describing it as near mint. Took a good while before somebody figured out that, in the photo of the guitar, there was a flower pot in the background with mint growing in it... I've polished out scratches in plastic before, you do have to remove some significant material. Scary. I'd try a really light leveling wax, like an automotive finish wax with no abrasive. Try to fill the scuffs and make them dissappear. Have you got any Rain-X in the garage?