What is the value of a (The International One Troy Ounce .999 fine)?

You do not have a coin but what is called a "silver round". It is actually a medal or since it says trade unit it could be clified as a trade token. It indeed is worth the value of the silver in it minus a percentage for dealer profit. It is best to sell this type item when silver is high not now when it is low. At this point it is worth $10 to $14 plus or minus.