1859-O Silver Seated Liberty Half Dollar ~ Estate Find ~ Unknown Shipwreck Effect?

This coin is an estate find from New Hampshire. The finish is odd, silver but shiny and somewhat pitted. I am not a coin collector so no idea if this is considered the shipwreck effect, surface does make me think there was some corrosion. Dated 1859 with "O" on back. Please take a look at all pics, zoom in and ask any questions that you might have before placing a bid. Selling as-is as-found.  $5.50 to send via First Class Mail with tracking and insurance in the U.S.A.

NO RESERVE.