What is large coin with liberty across the top front above woman's head and one ounce 999 fine silver around edges of back along with e pluribus unum with no year?

Well, it's exactly what it says it is. One ounce of .999 fine silver. A privately minted bullion ingot. Its value is now, and will forever be, tied to the current price of an ounce of silver. See the related links for the current silver value.