Royal Mint Gold Plated Threepenny Pieces Queen Elizabeth II & King George VI 18”

Royal Mint Gold plated Threepenny pieces. One each Queen Elizabeth II and King George VI. Both coins are gold plated. Backs are a little faded. The 18 chain is a gold finish marked Hong Kong. (HK was a British Colony). Note: The original box has tears and damage. I do not know the actual dates of these coins. Below are the time each Monarchs portrait was used. George VI 1937-1952 Queen Elizabeth II 1953 - 1967