Things You'll Need
Instructions
Ensure the container's lid is screwed on tightly and carefully shake your ferric acid.
Place an old rag or washcloth on a smooth surface and put your coin on top.
Remove the dropper from the ferric chloride container and place one small drop on the southern region of the face of the coin.
Use your rag or washcloth to rub off the excess ferric chloride. The date should now be visible.