1989 World Series Battle of the Bay – Lot/2 1 oz. 999 Silver Coins A’s & Giants. Set of 2 World Series Battle of the Bay limited edition silver coins. Each coin is 1 Troy ounce of 0.999 fine silver. Coins are from 1989 National League Champions. The Giants coin is #1522 and the A’s coin is #1536. Coins are still in original sealed packaging. Some natural toning/oxidation can be seen in small amounts on both coins as seen in photos. Please thoroughly look through photos as they are part of the description.