Tiny Epic Pirates Metal Coins - $17

14mm, 52 count

From the Kickstarter FAQ:

What benefit do I get for adding on the metal coin pack?

If you would like to track how many gold coins each pirate has using individual coins as opposed to the tracker, this add on is for you! 4 metal coins are included in your base game and function to move around your gold track. This add-on is not required for play. The coin size is 14mm.