If this were my coin, I would leave it alone. The areas on the obverse between the first feather and rim and on the third feather and on the reverse in the center of FIVE CENTS and between the buffalo's head and the U of UNITED might conceal surface damage that could be revealed on restoration.
Right now, the coin has good, honest eye appeal. There is a decent circulation cameo and the central devices have a nice patina. Think about the reasons you bought
this coin, rather than other examples. Something about
this coin caught your eye. What you saw in it, others will also see in it.
Remember the things that happen to curious cats and people named Pandora.
