EDIT: i just found a link to a pic of it http://www.worthpoint.com/worthopedia/hawaii-king-kamehameha-captain-cook-93931858 So I have this coin/medallion it is heavily patinaed so I think it's copper or bronze. On one side of the coin there is a side profile of Captain James cook situated to the left of the coin, to the right of him is a ship (under the ship states "Jan. 18, 1778" and an aerial view of the Hawaiian islands. Encircling them both are these words that start in the upper right side of the coin "CAPTAIN JAMES COOK" then on the bottom center it says "DISCOVERER OF HAWAII". On the other side is The Kind Kamehameha "statue pose" in the center of the coin, in which behind him coconut trees and diamond can be seen as well as men on a canoe. Encircling him are the words "KAMEHAMEHA THE GREAT FOUNDER OF THE HAWAIIAN KINGDOM. The coin is about as big as a condom and there are no ridges on the perimeter any idea whether this is coin or commemorative medallion? what it's worth? how to clean it?
If you look at the front of it, flip the coin heads-over-tails, and find it is upside down, then you have a medallion. And don't clean it.
